In Colombia, a criminal kingpin is having a good time with a lady in a jacuzzi when suddenly,
a quick shot from a sniper kills him right there in the water. Meanwhile in Virginia,
a former marine is spending the evening in a motel while heavily drinking. After looking at
some pictures of his old squad and remembering how many of them aren't around anymore, not to mention
the PTSD left behind by war, he grabs a gun and decides to end things for himself. Days later,
a funeral is thrown in his honor. Master Sergeant Brandon, a former member of the late marine's
squad, grieves for his old friend and expresses bafflement at his choices, wondering how a legend
could end up like that. His friend Major Miller reminds him that their job can take a toll on
a soldier's mind, making Brandon wonder if that's ever gonna happen to him too. Miller
also has a new mission for Brandon in Colombia to help the DEA with an important case. Brandom
refuses because he has his grief to deal with, but Miller ignores him and just makes him take
the car that is already there waiting for him to take him to the agency's private jet. Hours later,
Brandom arrives in Bogota, and the driver that picks him up can't stop fanboying over him because
Brandom is well-known for his amazing career as an elite sniper. Once they reach the National
Police Headquarters, Brandon meets Santiago, the officer that has been assigned as his observer,
and Captain Garza, the police leader that works as a link between the Colombian cops and the American
DEA. Lastly, there's Master Gunnery Sergeant Beckett, who also happens to be Brandon's
father. Although they're very happy to see each other again after a while, father and son still
refer to each other using their rank for the sake of keeping professionalism. The meeting begins and
Brandon learns his target is Morales, the boss of the cartel in Colombia. His empire controls 60% of
the contraband routes that go to the US border and specializes in recruiting children from the street
to raise them into being his thugs. His network is impossible to trace and nobody has seen him
in ten years, but now he's returned, and they know this because in the last few days, all of Morales'
rivals have shown up dead, like the man in the jacuzzi. The difficulty of that shot indicates
this sniper is ex-military and Morales must've hired him to get rid of the competition. Recent
intel indicates that Morales will be on his farm soon and the agents want to have Brandon as backup
while they raid the place, but Brandon turns them down because he doesn't like babysitting.
An argument ensues that is suddenly interrupted by Agent Kate from the DEA, who is furious because
they started the meeting earlier without her and this is her operation. She's brought all
the information about the farm for them to study and wants to know if Brandon will take the mission
seriously, Brandon admits he hates this kind of assignment but he promises to do as he's told. The
next day, Kate's DEA agents together with Garza's cops approach the farm while Brandon stays hidden
in the woods with Santiago. Beckett watches the live transmission from the office, where
he's joined by Agent Samson of Homeland Security, who is worried that Beckett and Kate are wasting
time and resources on intel that hasn't been confirmed. The team parks their trucks at a safe
distance and approaches secretly on foot, using the trees to take cover until the time comes. As
soon as Beckett gives them authorization, the team rushes in and kicks down the house door,
only to discover this activates a trap and the whole building explodes. The agents that were at
the back manage to survive the blast, but those at the front all die except for Garza, who is
suddenly wounded in the leg by the sniper hired by Morales. Kate, who is hiding behind the farm car,
decides to go to him to try to help him escape, but as soon as she picks him up, the sniper shoots
again and kills Garza on the spot. This shot allows Brandon to find the enemy's location and
fire back, but the other sniper dodges the bullet just in time and runs away before Brandon can
try again. Later at the station, a furious Samson demands an explanation for what happened, and they
reach the conclusion that someone in the police force must've been selling information. Kettle and
Brandon also point out that the sniper had waited for Kate to come out instead of shooting at Garza
again immediately, meaning she had been his target all along, and shooting Garza's leg had been
bait. The second shot failed only because Kate had accidentally put Garza between her and the sniper.
Samson wants to cancel the whole operation but Kate refuses to give up without a proper fight,
and their argument goes on for so long that Brandon cuts it to make a deal: the team gets 48hs
to track the enemy and if they fail, then they'll accept to go home. After the meeting is over,
Beckett tells Brandon that the other sniper probably knows who he is after that shot,
so he better be careful. Then, Brandon goes to get his room at the DEA safehouse in Las Cruces,
where he'll be staying while he's working here in Colombia. No matter how many times the other
agents swear the security is top-notch, Brandon still considers any decent sniper could shoot
easily into any of the rooms. Meanwhile the sniper hired by Morales, who is known as El Diablo,
is having fun with his girlfriend when he's suddenly interrupted by a call that informs
him Kate and Brandon are staying in the DEA safehouse. El Diablo failed to kill them once,
so this is his chance to fix his mistake. Back to Brandon, he is reading an article
online about his friend's death which mentions a crisis in the armed forces because most soldiers
end their service with various mental illnesses on their shoulders. Kate suddenly interrupts him to
thank him for his support during the meeting, then admits she has never lost a man under her command
and is struggling to deal with it. She also thinks something was weird about the way Garza had been
shot and Brandon agrees, the shot the sniper managed to pull off should be impossible to
do following the laws of physics. Kate explains she doesn't want the sniper, she wants Morales,
but Brandon points out that this narrow-mindedness of hers has caused many people to die. Offended,
Kate rushes out of the room, breaking into tears as soon as she enters the elevator because Garza
had been a close friend of hers and she feels guilty about his death. While Brandon keeps
researching new types of bullets and checks on Santiago's guard shift using a radio,
Kate goes to have a drink at a popular bar where she has to get violent with a harasser that lets
his hands wander too much. Next she meets with Carlos, a priest beloved by the community for his
work with people in need. Carlos thinks Kate can't win against such a dangerous man like
Morales and that she should quit, but Kate still refuses to give up, so Carlos decides to share
the little information he has. The sniper is known as El Diablo, and since he was hired by Morales,
he should know the location of his hideout. Before leaving, Carlos promises to contact Karen if he
can find out anything else. Back at the safehouse, Santiago urgently calls Brandon when he finally
notices something dangerous, so Brandon rushes to the roof with his own weapon. Santiago is correct,
there's a sniper hidden in the distance, and now Brandon and El Diablo are patiently waiting to
see who shoots first. Brandon is the first one to open fire, but El Diablo quickly dodges the
bullet before shooting back. As he jumps out of the way and hides behind a wall, Brandon decides
to stay there for a while, hopefully making El Diablo believe he's dead. The next morning,
the team retrieves the bullet and contacts Miller on a videocall to get his expertise
on the subject. This is a smart bullet that comes with laser guide technology,
allowing you to control its trajectory. There's a chance El Diablo isn't former army after all,
or not even a good shot at all, the bullets are just doing the work for him. Miller also points
out this safehouse isn't very safe, validating Brandon's feelings. Samson finishes the meeting
after promising to find a decent shelter by contacting the CIA. Meanwhile Morales is in his
safe house playing games with his boys, although he teaches them to fight for what it's theirs
without being afraid using a very tough kind of love that makes many of them fear him more
than actually respect him. Afterward, Morales goes to his office intending to call El Diablo,
only to find him already there on his chair. El Diablo wants to be paid for all the competitors
he's killed, but Morales refuses because he didn't kill Kate or Brandon too to complete the job and
kicks El Diablo out of his house, claiming he doesn't really need him. The next morning,
Kate and Brandon are going to a new safehouse by car when Kate receives a call from Carlos, who has
discovered El Diablo has a girlfriend. He texts Kate her address but also asks her to be careful
because Morales' men control the neighborhood. After hanging up, Kate tells Brandon that she's
realized he isn't interested in the operation itself, he only wants to find the sniper because
his bullets are better than his skills. Brandon admits it's true, but before he can say more,
the car is run over by a truck. A bunch of men working for Morales come out of the truck and open
fire on them, so Brandon and the cops that had been escorting them shoot back while Kate runs to
find a place to hide. All of Morales' thugs end up dead, but sadly so does Santiago. Brandon notices
Kate is gone and discovers she accidentally dropped her phone on the car seat, the text on
the screen still displays the address Carlos sent. As soon as she arrives at this shady neighborhood,
Kate can tell there are lots of men keeping an eye on her. She knocks on the door at the right
address and meets Morales' girlfriend María, who immediately tries to close the door when
Kate shows her badge. Kate tries to stop her, but this gets the attention of all the thugs that now
are surrounding her, and María pushes her back so that Morales' men can capture Kate. A fight begins
between Kate and the men, and while she manages to land a few hits, she still ends up overpowered
and pinned against the wall. When the thugs begin getting in line to take advantage of her, Brandon
shows up and begins shooting them. A bunch of them fall dead, although one manages to escape on a
stolen bike and Karen manages to capture the last one. When she's about to knock him out though,
María makes her let go of him by threatening her with a firearm, luckily Brandon surprises María
from behind and the distraction allows Kate to disarm her. She also takes María's locket from her
neck, which has a picture of her with El Diablo inside. Brandon sends a photo of it to his father
so they can run it through the database with face recognition software, Brando also tells him they
were ambushed earlier, meaning someone is still spying on them. Until they find out who, he and
Kate will be hiding somewhere else instead of the assigned shelter without even telling Beckett the
address. At the station, Samson is getting tense about this whole situation and tries to accuse
Beckett of giving his son too much power over the operation, but Beckett ignores him. Kate decides
to take Brandom to her old neighborhood so that Carlos can hide them for a while. The priest isn't
surprised to hear Morales has moles in the police because he's friends with many powerful people,
not to mention all the small criminals that look up to him. Kate realizes that messing
with Morales' network may cause him to come out from his hideout, and Carlos accepts to share
some names he knows of. During the following couple of days, lots of bodies begin appearing
all over town belonging to various men that work for Morales, including his banker. This is all
the work of Brandon, who has been killing every name Carlos could provide. Miller calls Beckett to
tell him Brandon is out of control, but Beckett doesn't know how to find his son. One evening,
Carlos offers Brandon a friendly ear and gets to hear about the marine that died before this
all started. Brando continues to be worried about the same happening to him, so Carlos explains that
the only way to avoid such a death is to forgive yourself for the moral damage you've caused. In
the meantime, Morales finally leaves his hideout, but only to look for El Diablo at María's place.
He's sick of losing men, thus he pays El Diablo all the money he owed him in one go and promises
much more if he stops Brandon. Sometime later, Samson and Beckett call Miller to update him on
the information they've found about El Diablo: his real name is Enrique, and he's an ex-sniper
defense. He arrived in Colombia from Venezuela nine months ago, but they lost track of him after
he crossed the border. Samson wants Miller to take Brandon and Kate out of the operation, but
Miller disagrees, pointing out they're doing more for the mission now than anybody else. Meanwhile
El Diablo pays off a guy in the neighborhood to tell him where Kate and Brandon are hiding,
this is how he learns all about Father Carlos. Later in the evening, Kate receives a mysterious
message from Carlos telling her to meet him at the plaza at 10 p.m., but when she tries to call him,
Carlos won't answer. It's obviously some kind of trap, so Kate and Brandon sneak into a building
in front of the plaza and wait for some indication that El Diablo may be around. A few hours later,
a truck parks by the park, and Kate recognizes the guys coming out of it as the thugs from
María's neighborhood. These men do something mysterious behind the truck before leaving again,
and once the vehicle has been moved, Kate and Brandon are shocked to discover Carlos has been
tied to a park tree. Kate wants to go and rescue him, but Brandon stops her before she goes out,
reminding her this is El Diablo baiting her. Brandon decides to save Carlos by shooting the
rope, but his shot only manages to graze it and show El Diablo their location. Fortunately Brandom
manages to land a second shot and release Carlos before El Diablo opens fire on them and they run
away, this makes El Diablo so furious that he shoots Carlos instead as revenge. The next day,
the entire town comes together to say goodbye to the priest, including Kate and Brandon. Standing
behind the crowd, Brandon notices the guy that escaped on a bike the other day and goes after
him, chasing him through a few streets before he manages to capture him. The guy plays tough at
first, but when Brandon reminds him Morales killed the town's beloved priest, the thug breaks into
tears because Carlos used to help him when he was on the streets too. After Brandon promises the DEA
will offer witness protection, the boy accepts to confess the address of Morales' hideout. With this
information, it takes only a matter of minutes for Samson's team to find Morales and finally
arrest him, now he'll be taken to Miami to be prosecuted by an American federal court. Brandon
worries that El Diablo will try to stop Morales from reaching Miami and spill their secrets,
and he's right: a few days later, El Diablo is arriving in the USA with a very convincing fake
passport. After passing through customs with no issues, he gets in contact with his bullet
provider, who has already left him a car with new weaponry waiting for him. In the Homestead
Aire Reserve Base in Florida, Brandon, Kate, and Beckett watch Morales arrive in a federal
helicopter. Then they get together with Miller to make a plan of defense against El Diablo,
because they're sure he'll try to attack while Morales is being transported to Miami. Miller
also informs them that the type of bullets that El Diablo is using have been disappearing from
the DEA's own vault, which means his mole wasn't in the Colombian police but here with them. When
Samson arrives to help with the transportation, Brandon explains the plan to him: their agents
will guide a convoy that protects a car with a fake Morales wearing a hood over his head to
bait El Diablo into revealing his location, but the real Morales will be traveling in a separate
van than will look like it belongs to a laundry service. While Kate, Brandon, Miller, and Samson
find a place on a roof to be ready for El Diablo, the convoy leaves the air base and hits the road,
where a group of criminals is already waiting. Surprisingly, the convoy isn't attacked, the thugs
only start moving in their cars when the van shows up as if they had known about the trick all along,
they were probably sent by the mole to protect his identity from Morales' confession. El Diablo also
waits for the van to show up, and after he shoots it to make it stop, the thugs leave their cars and
open firing on the vehicle. Miller expertly kills all these guys, and seeing they weren't able to do
much, El Diablo shoots again to make sure the van passengers are dead. The van explodes and
now Brandon has El Diablo's location, it only takes him a few seconds to aim and finally kill
him for good. The convoy continues to make its way Toward Miami, where it's revealed that the
man under the hood was Morales after all and the van had been the real decoy. In fact the van had
been completely empty and the team moved it with a remote control. Kate, Miller, and Brandon turn
on Samson to arrest him because it turns out he's been the guy passing information to Morales and
El Diablo all this time. Samson tried to deny it, but Miller's IT team had already hacked his phone,
now they just needed to catch him red-handed because the text messages had fake names
on them and proved nothing. This makes Samson finally admit he did it and confess he worked
for Morales because he had thought the kingpin would be their best option to prevent an atomic
bomb. Kate can't believe so many people died for this and punches Samson in the name of Garza and
Carlos. After arresting Samson, Miller returns to Washington. Beckett has had enough action to
last him a lifetime and decides is finally time for him to retire, which prompts him to give
his son a warm hug before saying goodbye. He also points out that Brandon and Kate make a good team,
and Brandon admits playing babysitting for the DEA may not be a bad job to take after all.