For a long time, aliens have kept their criminals locked up in human bodies, but humans are
unaware.
In the year 1380, a secret gang of masked warriors is chasing a woman behaving oddly,
when suddenly, a crack in the sky opens up and a car comes through.
From this car, two robots come out, Thunder and Guard, who are here to capture the alien
inside this woman since their job is to protect Earth from any aliens that manage to escape
their hosts.
Guard extracts the alien successfully with the help of his glowing blade, but the woman
dies in the process, leaving behind her baby daughter.
Afterward, the pair returns to 2012, and Guard puts away the alien in the special cell at
his home with the others he's caught so far.
Then, he discovers Thunder has brought back the baby girl with him.
Now Guard has no choice but to raise the baby while waiting for the next prisoner convoy,
which will arrive in ten years.
In 1391, magician Mu-Reuk is using his powers to catch criminals from wanted posters and
get the bounty money.
Today's thieves are tough opponents, but Mu-Reuk has many tricks in his sleeve, including summoning
the kitties from his fan that can become warrior catmen.
The thieves are successfully caught and handed to the authorities, and after getting paid,
Mu-Reuk immediately begins looking at the new listings to choose his next objective.
Among all the posters there's a huge payment for an exotic dagger, and seeing the drawing
makes Mu-Reuk have weird flashbacks of a man the forest and a girl at the beach.
He decides to take the job anyway, meaning his next stop is the local prison, where prisoner
Dong-I may have some information.
Mu-Reuk pretends to be Dong-I's son to be allowed to visit him and he uses his powers
to steal the cell key.
Afterward, he goes to see Dong-I and offers the key in exchange for some clues.
This is how Mu-Reuk learns that the blade came up in a fishing net some months ago,
and the fishermen sold it to a former magistrate that nowadays runs an inn in the city.
Mu-Reuk and his catmen go to the city and while looking for the inn, they're curious
by the presence of Suiter, because of his weird clothes.
Once they enter the inn, Mu-Reuk meets Hyun-Gam, the former magistrate who doesn't like the
questions Mu-Reak is asking and uses his own powers to easily freeze him in place.
Afterward, Hyun-Gam goes upstairs to meet Suiter, who claims to know what the blade
is.
With the help of his catmen, Mu-Reuk goes upstairs too and finds Hyun-Gam being attacked
by Suiter with the blade, which falls to the floor after Hyun-Gam takes it off his body.
Dong-I is now in the inn too, and he grabs the blade as soon as he sees it drop.
Then he runs away as Suiter begins chasing him while Mu-Reuk checks on Hyun-Gam, who
tells him not to awaken.
Mu-Reuk notices Hyun-Gam had a bounty listing for Suiter and decides to go after him, but
his attacks don't really hurt him.
Suiter doesn't even need his tentacles, he just punches Mu-Reuk against the wall until
he passes out.
Later, the catmen come to rescue Mu-Reuk and when they look through the hole in the wall,
they find a spaceship stuck in the river, which must've resurfaced because of the drought.
A noise among the trees indicates someone is nearby, but when they throw a torch at
them, they only get to see a lady in red running away.
In 2022, Guard has to keep on going to meetings with the school teachers because the now ten-year-old
Yi-An gets in trouble all the time telling stories about aliens and robots, but luckily
nobody believes her.
It seems Yi-An still has a few memories from when she was younger and the mind-altering
technique they usually use on civilians isn't working well on her.
Another annoyance about having to go to the school is that Guard keeps being hit on by
Kae-Ae, the aunt of Yi-An's best friend Min-Sun, but Guard ignores her.
Once Yi-An's classes are done, Guard drives her home, and she takes the chance to hide
a second phone she's bought inside a compartment in the seats.
After they arrive, Yi-An gets off the car, but thanks to the second phone, she gets to
listen to Guard discuss the convoy that will arrive the next day and will need 107 humans
for implantation.
At nine p.m., Guard leaves like he does every night, and Yi-An goes back to the car to recover
her phone.
She ends up accidentally opening the compartment and finding the alien technology inside the
car, causing Thunder to reveal himself to stop her from touching it.
Now Yi-An is asking questions, so Thunder explains about the aliens and the fact Ya-An
came from the past.
At that moment, a new message arrives, indicating that the chosen place for the next implantation
will be a hospital.
The next day, Yi-An goes to that hospital and records everything in case her memories
are deleted later.
While recording, she bumps against police officer Do-Seok, who asks her to be more careful.
At that moment, a giant spaceship appears in the sky and a strange stone is dropped
in the middle of the hospital.
This stone grows into a cocoon, which releases a bunch of tentacles that go after every human
in the building to implant the new alien prisoners.
Do-Seok is implanted too, but Yi-An is spared, although Guard sees her running out of the
hospital.
He retrieves the stone while the spaceship flies away and everyone else continues with
their lives as if nothing had happened.
Back in 1391, Mu-Reuk and the catmen are still looking for Suiter and eventually find the
old shack he had been staying at.
There, they find a note from a temple asking him to steal the blade and a painting on the
wall that shows the spaceship from the river, a bunch of aliens, and Thunder.
Meanwhile, the temple Suiter worked for turns out to be the headquarters of the masked warriors,
and today they're being visited by mages Heuk-Seol and Chung-Woon.
They've brought their magical items to show the leader Ja-Jang, who hasn't left the temple
since he arrived ten years ago and isn't really interested in trinkets.
What Ja-Jang wants is the glowing blade, and he hires the mages to get it back.
In the city, Mu-Reuk gets some information about a noble family that bought the blade,
so he infiltrates the family wedding by capturing the groom and taking his clothes.
Mu-Reuk goes through the ceremony pretending to be the groom, and when he's finally alone
with the bride, he thinks she looks familiar, not realizing she's the Red Lady from that
night in the river and she's also pretending to be the bride.
Mu-Reuk finds a gun under her skirt and doesn't understand what it is, but the Lady tells
him not to worry and pours some tea.
After taking a sip, Mu-Reuk excuses himself and goes outside, where his catmen inform
him they heard the blade is in the family storehouse.
Mu-Reuk enters the storehouse and begins feeling unwell, and after hiding, he sees Red Lady
enter the room too because she's also looking for the blade.
At that moment, the mages arrive at the house, also demanding to see the contents of the
storehouse and using their magic to order the family leader to bring the blade to them.
Mu-Reuk drags his sick body back to the room and finds Red Lady hiding from the mages,
which makes him realize she's fake and that she put something in his tea that is making
it hard to move.
After telling Mu-Reuk he can just sleep the effects off, Red Lady goes outside and begins
fighting the masked warriors with a combination of martial arts and gunfire.
When the family leader brings the blade, Red Lady takes it for herself before going against
the mages, who use a special invisibility cloak to attack her.
However this isn't enough to trick her, and Red Lady manages to defeat them by cutting
them with the blade before shooting Heuk-Seol in the arm and hurting Chung-Woon's ears with
the sound of the gunfire.
Then Red Lady tries to run away with the blade, only to be knocked out by the masked warriors
that sneak attack her.
They take her and the blade away, but they drop the gun in the process.
Minutes later, the catmen rescue Mu-Reuk and take him away too, picking up the gun on their
way out.
In 2022, Yi-An goes to stay with Min-Sun, showing her the videos she took at the hospital
while Kae-Ae overhears.
Guard manages to find her location anyway, but not wanting to deal with the aunt's flirting,
he sends Thunder to retrieve Yi-An instead.
As soon as they get home, Yi-An demands answers, so Thunder explains they do the implantation
for the sake of keeping peace in the universe.
The aliens can only leave the human bodies for five minutes, otherwise, Earth's atmosphere
will kill them.
Yi-An protests against humans being used as prisons without their consent, but she's ignored.
When night falls, Yi-An can't sleep, causing her to go to stay in the back of the car because
Thunder's presence is comforting.
The next day, a new unexpected spaceship is approaching Earth.
Do-Seok is trying to do his job, but he keeps feeling dizzy and shoots a criminal that wasn't
armed, getting him into trouble at the station.
The criminal gets to walk away, but Do-Seok overhears some of his coworkers saying they'll
buy from him later, so Do-Seok shows up at the illegal exchange and kills them all.
It seems he isn't in his right mind because hours later, he wakes up in his tub with the
victims' bloody clothes in his hands without understanding.
At that moment, the spaceship gets close enough for Thunder to detect it, so he begins ringing
the alarm.
Right after it, he gets another important signal, indicating that the alien in Do-Seok
has woken up.
Guard tries to get Yi-An out of the car, but she refuses to leave, and since the spaceship
is already landing on Earth, Guard has no time to argue.
Thus he takes off, transforming the car into a spaceship of his own with Yi-An still inside.
Downtown, a red alien gets off the ship and finds Do-Seok, chasing him into an elevator
as it explains the leader of the rebellion, who destroyed Guard's planet, is implanted
in De-Seok's mind and he wants to free him.
When Guard arrives, he transforms into armor mode and goes after this alien, unaware that
Yi-An is taking the chance to steal the gun he left behind.
The fight between Guard and the alien is fierce, and they end up going through the elevator
floor, where the alien takes advantage of his tentacles to catch Guard and remove the
glowing blade from his leg before dropping him to the floor.
While Thunder rescues Guard, the alien returns to its spaceship to go after Do-Seok, who
is escaping in his police car and tries to hide in a parking lot.
Suddenly, the spaceship crashes into the parking lot and begins chasing the police car throughout
the city, so Guard transforms his car into a ship again and goes after it.
Both spaceships begin shooting each other, and Thunder's analysis reveals that the bright
red circle in the middle of the enemy's ship is its weak point.
Because the city is taking too much damage from the fight, Guard flies up, but the enemy
shoots him and makes him fall into the sea before going after Do-Seok again.
Once it finally hits the police car, the alien lands and comes out with the blade in hand,
throwing it at De-Seok before Guard manages to come back to continue the fight.
However since the blade is in the process of awakening the leader, the red alien's mission
is done and he grabs Guard with its tentacles before self-destroying.
The alien leader, known as the Controller, leaves Do-Seok's body and takes the blade
into the spaceship.
Thunder leaves Yi-An in the car while he goes to check on Guard, trying to recharge him
with some of his own energy.
There isn't much he can give him without dying himself, so once he awakens, Guard sends him
to check on the situation.
Thunder enters the spaceship and discovers the red alien has brought the Haava with him,
a substance that can change Earth's atmosphere permanently and would allow the alien criminals
to roam freely without their human bodies; it would also kill all human life.
Guard uses the little energy he's got to enter the spaceship too and fight the Controller,
but the alien just pushes him away before leaving the ship as the Haava begins floating
around the city.
At least the Controller left the blade behind, which Guard uses to try to stop the Haava
system.
Meanwhile, Thunder goes to protect Yi-An after she was seen by the Controller, who has returned
to Do-Seok's body.
Releasing a tentacle, Do-Seok triggers the first Haava, which creates a red fog that
kills all the humans that it touches.
After opening the road to allow people to escape, Thunder sends Yi-An away in the car
before running back to go after the Controller while Guard finally seals the Haava inside
the ship again.
Seeing the red fog take over the city is a vivid memory that has stayed with Yi-An since
it happened, and now it's revealed she's dreaming about it in 1391 because the Red Lady is her
all-grown-up.
She arrived in this era ten years ago inside the alien ship, and Ja-Jang came with her.
Now, she wakes up to find herself in the temple, trapped inside a magic prison.
Suiter and Ja-Jang discuss the matter of needing to find the Controller, who should be inside
one of the four people that saw them arrive ten years ago.
It wasn't Hyun-Gam, because he died to the blade instead of awakening, and it can't be
the mages either because the blade cut them too and nothing happened, so now they need
to find the fourth, who happens to be Dong-I. In the meantime, Mu-Reuk wakes up after having
those weird flashbacks again.
He and the catmen attack some masked warriors they see on the road in order to steal their
clothes and sneak inside the temple.
Those clothes have important items in their pockets, so to keep their cover, the trio
must hand them in.
The mages get a special plant to treat Heuk-Seol's bullet wound, and Ja-Jang gets a letter explaining
that the spaceship has resurfaced in the river.
At that moment, the blade starts glowing yet Ja-Jang can't understand why.
The mages are curious, but Ja-Jang doesn't need them anymore and tells them to leave
after they're done eating.
Since Mu-Reuk is dressed as one of the servants, he's in charge of taking food to Yi-An, and
he takes the chance to ask about her identity because she still looks so familiar to him.
Yi-An refuses to talk but she changes her mind when Mu-Reuk promises to give her the
gun back.
She explains she and the blade came from the future, and when Mu-Reuk doesn't believe her,
she grabs him through the food door, causing him to burn his clothes against the magic
wall.
Scared, Mu-Reuk gives her the gun and runs away.
Unfortunately, Yi-An can't act because the food had been poisoned, and she immediately
passes out.
The mages have been poisoned as well, but they use their magic to fight off the effects
while trying to reach the antidote.
At that moment, Mu-Reuk appears behind them as the catmen lower him through the roof so
he can steal the blade.
The mages mention the antidote, asking for his help, but they're interrupted by the masked
warriors bringing coffins to bury the mages.
Mu-Reuk fights them all off before taking one of the antidotes with him, realizing Yi-An
ate the same thing as the mages.
On his way out though, Ja-Jang hears him running and hits him with his tentacle.
While Heuk-Seol finally manages to grab the antidote with her mouth and shares it with
Chung-Woon, the catmen pick Mu-Reuk up and take him to the forest.
However, he doesn't want to abandon Yi-An, so he runs back to the temple, where the magic
wall has gone down during the fight.
Mu-Reuk feeds the antidote to Yi-An, only to be found and stabbed by Ja-Jang again before
he takes the blade back.
Then, Yi-An and Mu-Reuk are put inside coffins, and Mu-Reuk's is thrown into the ocean.
In 2022, the two aliens that would later become Suiter and Ja-Jang awake thanks to the red
fog and get in contact with the Controller.
Meanwhile, news drones have managed to get inside the fog and are showing the aliens
to the world, and at home, Guard knows he needs to go back there to stop them.
First though, he talks to Yi-An and finally confesses he killed her mother because of
the alien she had inside.
Now though, she needs to leave so he can do his job, and Yi-An makes sure to pack the
gun she stole.
While Thunder drives Yi-An to Min-Sun's house, the Controller in Do-Seok's body and his two
thugs come to Guard's home to take back the ship, but Guard isn't strong enough to stop
them.
At first, Thunder refuses to go back to help, but Yi-An changes his mind when she reminds
him of the ship's weak spot.
As soon as they get there, Thunder begins fighting the aliens while Yi-An helps a weak
Guard get into the car.
Once everyone is back in the car with the knife, they drive away, only to see the aliens
chasing them.
Seeing no other option, Guard uses the blade to open a portal into the past, and the car
passes through with the aliens, falling in 1381.
Hyun-Gam, Dong-I, and the mages see the car in the sky, however there's a fifth person
with the group that the aliens didn't know about: a very young Mu-Reuk.
Once the car lands, Guard tries to fight Do-Seok, only to get killed by his tentacles.
Furious, Yi-An shoots Do-Seok while the portal closes, and Do-Seok pushes the car into the
river, where it takes back its ship form and the blade floats away from Yi-An's hands.
While Do-Seok tries to find a new body, young Mu-Reuk comes to the river and helps Yi-An
out of the water.
He also retrieves the bag with the gun, and this memory is remembered by Mu-Reuk inside
the coffin, allowing him to escape because somehow he's still alive.
At the temple, Yi-An's coffin is being buried, but she wakes up just in time to use her gun
to escape.
By shooting Ja-Jang too, she manages to recover the blade before hiding.
At that moment, the mages show up and begin fighting the aliens with all the tricks they
have.
Suiter ignores them and goes after Yi-An, stealing the blade while the mages try to
seal Ja-Jang inside a vase.
Suddenly, Mu-Reuk shows up and begins fighting Suiter, giving Yi-An the chance to escape.
Her injuries make it hard to run, but Heuk-Seol can feel her pain, which means she's the lost
baby of an old friend.
The mage shares some medicine with Yi-An while the alien inside Suiter leaves the body and
knocks out Mu-Reuk before going after Yi-An.
Heuk-Seol fights Suiter while Chung-Woon keeps his powers on the vase, and when he wakes
up, Mu-Reuk comes to help as well.
Using one of the mage's many magical items, Yi-An shoots Suiter's human body, allowing
her to recover the blade.
Unfortunately, Chung-Woon doesn't have enough power to hold the vase alone, and Ja-Jang
escapes.
While Mu-Reuk finally finishes off Suiter, Ja-Jang chases Yi-An, who makes him follow
her to the river, and the two catmen go after them too.
Before dying, Suiter tells Mu-Reuk there's something inside him.
Suddenly, the flashbacks hit him again and he finally remembers what happened the day
he met Yi-An.
He had heard a noise in the forest and went to check, only to bump into Do-Seok.
The Controller took the chance to leave Do-Seok's body and implant himself in the boy.
Mu-Reuk passes out after remembering this, and the mages begin to wonder if they should
kill him too.
In 2022, Kae-Ae shows up at Guard's home and sees the car enter the portal, before realizing
they left a spaceship behind.