Masquerade Hotel begins by showing a woman named Naomi Yamagishi,
who works as a front desk clerk at a five-star hotel called Cortesia.
Naomi is an employee who is very dedicated to her job.
As a front desk clerk who always interacts with hotel guests, she always ensures that all guests
get the best service because the hotel where she works prioritizes the comfort and satisfaction of
guests staying at their hotel, without exception.
In fact, because she is very experienced in doing her job,
Naomi doesn't look panicked or angry at all when a guest makes a complaint.
One of them was when she faced a man named Takahiko Ayabe,
who complained that his room was filled with cigarette smoke.
Upon hearing that, Naomi immediately acted by apologizing to Takahiko and offering him to move to another room.
In fact, she offers rooms with better facilities than his previously occupied room.
One of Naomi's co-workers said that Takahiko may have purposely
filled his room with cigarette smoke so he could move to a better room.
However, Naomi doesn't want to make a fuss about it and just wants to focus on doing her job as well as possible.
After that, the general manager, Mr. Fujiki,
asked the hotel employees to attend an emergency meeting,
where they discussed the investigation conducted by the police to uncover the serial murder case.
He says that according to the police investigation, the killer will carry out their actions at the hotel.
Meanwhile, at the headquarters of Tokyo's Metropolitan Police Department, the police
are still investigating a serial murder case that has claimed the lives of three people.
They have not found any clues about the perpetrator or connection between the three slain victims.
However, the perpetrator always left a note indicating where the next murder would occur.
In the latest murder, the clues point to the Cortesia Hotel, where Naomi works.
To catch the perpetrator of the murder, who began to disturb the residents, the police sent
a man named Kosuke Nitta to disguise himself as one of the employees at Cortesia Hotel.
Kosuke will be assigned to be Naomi's co-worker to make it easier for him to observe the movements of
the hotel guests and the employees working there.
Because Naomi is a very strict and perfectionist,
so she asks Kosuke to obey all hotel rules, such as dressing neatly and providing the best service to guests.
However, he is trained to unmask any suspect identified by an investigation and has the opposite personality to her,
so the two often get into disputes. Kosuke then met his superior,
Mr. Ozaki, in the police force and filed his objection to the hotel rules he had to obey,
which he thought would only interfere with his mission.
However, Mr. Ozaki said he should disguise himself
as best as possible as a hotel employee so the killer would not suspect him.
On the other hand, Naomi objected to Kosuke's presence at their hotel
because Kosuke tends to act casually and often breaks the rules.
He does not carry out his role well and instead often fights with hotel guests,
so she has to apologize and calm the guests to maintain the hotel's good name and reputation.
One day, a male guest named Furuhashi wanted to check out at the front desk after staying a few days at the hotel.
Naomi apparently remembers him, who had previously stayed at the hotel,
and the last time he stayed, they lost a bathrobe in the room he occupied.
Because of that, she then asked permission to check his suitcase.
Furuhashi didn't seem to mind that. But Kosuke instead prevented Naomi from conducting a search
and invited Furuhashi to go immediately and bring his suitcase. Naomi suddenly felt irritated at
Kosuke for blocking her from conducting a search. However, he took her to the hotel
room occupied by Furuhashi before checking out and found a bathrobe hidden under the mattress.
Kosuke knew that Furuhashi was a fraud who planned to sue the hotel management for defaming him
by accusing him of being a thief and getting some money from the lawsuit. Furuhashi might be able to
easily trick Naomi and the other hotel employees. But of course, Kosuke won't just get caught up
in his cunning plan because of his experience dealing with various kinds of criminals. Upon
learning that, Naomi finally begins to acknowledge Kosuke's prowess as a detective in the police.
One day, Cortesia Hotel has a blind old woman guest named Yoko Katagiri. Kosuke immediately
became suspicious of Yoko, especially since she was wearing gloves, which he found quite odd.
Because of this, he treats Yoko rather harshly, so Naomi has to take over to serve her. Naomi served
Yoko in a very friendly manner, even asking Yoko not to hesitate to call her if she needed help.
Seeing Naomi's attitude toward pampering the hotel guests, Kosuke warns her to be more careful,
especially towards Yoko, who, according to him, is only pretending to be blind. But Naomi didn't
heed Kosuke's warnings at all and thought that he was too often prejudiced against others and
confirmed to him that their job was to serve guests well, not suspect them of being criminals.
Not long after, one of Kosuke's colleagues in the police, a man named Nose,
came to Kosuke at the hotel saying that he would help with the investigation.
Nose reveals that he suspects a woman at the hotel and asks Kosuke to investigate together.
Meanwhile, Yoko repeatedly calls Naomi to her room, arguing that she needs help. However, over
time, Naomi becomes suspicious of the blind woman. Even so, she tries to do her best to make Yoko
feel comfortable during her stay at the hotel. At the same time, Kosuke becomes even more suspicious
of Yoko and asks Naomi to be more careful, especially if she is alone with Yoko in the room.
However, Naomi emphasizes that she will be fine, especially as Yoko is an old woman who is blind
and needs attention. Even though Kosuke thought otherwise. The next day, Yoko, who had been
preparing to check out from the hotel, revealed to Naomi and Kosuke that she was not blind at all.
She deliberately pretends to be blind to test how good the service at Cortesia Hotel is for
people with disabilities. From the start, Kosuke had guessed correctly that Yoko wasn't blind
and treated her like a normal guest. Meanwhile, Naomi, who began to suspect that Yoko could see,
still treated her very well, and Yoko praised Naomi for her work ethic.
After the incident, Kosuke informs Naomi about the serial murder case he is investigating
and the possibility that the perpetrator will carry out the next murder at the Cortesia Hotel.
Kosuke then asked Naomi to keep an eye on the people around her, including the hotel employees,
and report to him if anyone was behaving suspiciously. Sometime later, Kosuke got
into an argument with a male guest named Kenji Kurihara, who told Kosuke to bring his things.
When Naomi comes and offers to help, Kenji yells at her and insists that he only wants to be served
by Kosuke during his stay at the hotel. Even Kenji purposely overwhelms Kosuke by asking him to do
trivial things so that Kosuke becomes irritated over time. On the other hand, Kosuke tells Naomi
about a female guest named Anno who asked the hotel management to keep her room number secret
from anyone. Upon hearing that, Naomi said it was a normal request from hotel guests,
and they had to fulfill it. Naomi then told about her experience with a woman who asked her to tell
her the room number occupied by her boyfriend and reasoned that she would surprise her boyfriend.
However, according to hotel regulations, Naomi could not fulfill the woman's request and was told
that her boyfriend was not there. The woman even insisted on telling Naomi that her boyfriend had
booked a room at the hotel. For various reasons, Naomi tried to make the woman leave the hotel
because from her behavior, she could already guess that the woman would make a fuss at the hotel
and disturb the comfort of the other guests. Naomi ended her story by saying they must prioritize
all hotel guests' comfort and safety. Meanwhile, Kenji again calls for Kosuke to come to his room
and blames him for the broken laptop. He then forces Kosuke to help him finish his pile of work.
Kosuke can barely contain his anger, but Naomi asks him to be patient and offers to help him.
Seeing Naomi's dedication to her work, Kosuke became curious and asked why she behaved this way.
She revealed that she had previously stayed at the Cortesia Hotel and felt very cared for during her
stay there. For this reason, she wants to repay the kindness of the hotel management
by treating all hotel guests as well as possible. Afterward, Naomi, who met Anno in her room,
accidentally revealed the room number of a man named Tatebayashi, who was staying at the hotel.
Realizing that Anno and Tatebayashi might have a complicated love relationship, Naomi rushes after
Anno to Tatebayashi's room to correct her mistake. Surprisingly, Anno turns out to be Tatebayashi's
wife, trying to uncover her husband's affair with another woman in the hotel room.
After confirming that her husband was having an affair, Anno immediately filed for divorce against
Tatebayashi and thanked Naomi for helping her. On the other hand, Kosuke felt a little relieved
because Anno and Tatebayashi were not involved with the murder case he was investigating.
In the meantime, Kosuke is again involved in a dispute with Kenji, forcing him to kneel and
apologize for a mistake he didn't make. Although Kenji repeatedly tried to provoke his anger,
Kosuke still tried to be patient with him until, finally, Kenji admitted that he used
to be Kosuke's teacher in high school and had a grudge against him. Kenji apparently feels
displeased to see Kosuke, who has an amazing career in five-star hotels like Cortesia Hotel,
and tries to get him fired from his job. Kenji admits his mistake and apologizes to Kosuke before
finally leaving the hotel. Shortly after, Kosuke and Nose return to their investigation and assume
that the murder case they are investigating may not be a serial murder because they have
not found any clues other than the GPS notes left by the perpetrator at the crime scene,
which lead to the location of the next murder. On the other hand, the police decided not to involve
hotel employees in the investigation, while Kosuke thought otherwise. According to him, if
they cooperate with the hotel management, it will be easier to catch the perpetrators. Meanwhile,
Naomi expressed her opinion about the possibility of the perpetrator targeting hotel employees,
considering what Kenji had just done who had a grudge against Kosuke in the past. It is possible
that the perpetrator was a guest at the hotel and felt let down by one of the employees who behaved
badly with them. Kosuke seemed to think about the possibility, and he thought it was very reasonable
if the perpetrator indeed had a grudge against one of the employees at the hotel.
One day, a woman named Keiko Takayama approached the hotel's front desk.
She asked about the preparations made by the hotel management regarding her wedding reception to
be held at the hotel. Naomi assured her that the hotel had prepared everything as well as possible.
Naomi then handed over a gift delivered to the hotel and intended for the happy bride-to-be.
However, Kosuke immediately became suspicious of the gift and asked Keiko's permission to
examine it first. Sure enough, it turned out to be a bottle of wine laced with poison.
Keiko finally revealed that lately, she always feels like someone is stalking her.
Hearing this, Kosuke and Naomi promised to carry out strict security on her wedding day.
Assuming that Keiko might be the killer's target, the police then devised a plan to provide security
and arrest the perpetrator before carrying out the action. On Keiko's wedding day, Kosuke tightens
his surveillance on all hotel guests, especially those who look suspicious. He also asked Naomi to
support the police plan to arrest the perpetrator, even though she had opposed the plan because she
thought it would endanger the safety of many people. Naomi said she would resign if anything
bad happened to the hotel guests. Kosuke said the same thing, where he would resign from the police
if he did not catch the perpetrator. When the wedding reception finally started,
Naomi saw a suspicious man because he was dressed like a woman. She immediately told Kosuke about
it, so the police managed to secure the man just before he was about to do anything to
Keiko. After being caught by the police, the man admitted that he was only told to look like that
and gave Keiko a letter, which turned out to be a GPS note. At the same time, Kosuke receives a
message from Nose saying that he found a clue about the culprit in a photo he sent to him.
When Kosuke saw the photo, how surprised he was when he saw Yoko Katagiri, who was there.
Kosuke also rushed to find the whereabouts of Naomi, who turned out to be accompanying
Yoko in her room. Yoko turned out to check in to coincide with Keiko's wedding reception,
so Kosuke didn't notice her arrival. Meanwhile, in a hotel room, Yoko asks Naomi to close her
eyes and pray for her late husband, who has passed away. But later, Yoko tied Naomi's hands
and feet and revealed that she was going to kill her because Naomi was the one who had foiled her
plan to meet her boyfriend at the hotel some time ago. Yoko then revealed that she wanted
to meet her boyfriend to hold him accountable for impregnating her. But Naomi gave various reasons
to kick her out of the hotel, so she had no choice but to wait for her boyfriend outside the hotel.
At that time, the weather was very cold and raining very hard. However, Yoko waited all
night outside the hotel until she finally fell ill and lost her unborn baby. Since then, Yoko has
held a grudge against her boyfriend, as well as against Naomi, who prevented her from meeting her
boyfriend. Yoko is determined to kill Naomi and her boyfriend. She then laughed with satisfaction
because she managed to outwit the police, so she could achieve her goal of killing Naomi. However,
Yoko doesn't seem to have predicted that Kosuke is an undercover cop, so he can easily find her bad
intentions from the start. Kosuke rushes to Yoko's room and manages to save Naomi just before Yoko
wants to kill her. He immediately dropped Yoko and handcuffed her while revealing Yoko's true
identity, whose real name is Maki Nagakura. She turns out to be deliberately tricking the police
into covering up her assassination plot against Naomi, thus making the police assume that they
are dealing with a serial killer. In the end, the police revealed that the three previous murders
were completely unrelated and managed to catch the perpetrators. After everything was resolved,
Kosuke ended his disguise as a front desk clerk at Cortesia Hotel and returned to his duties as
a police detective. Meanwhile, Naomi apologizes to the hotel's general manager for everything.
She blames herself for the reckless actions Yoko did to her. However, Mr. Fujiki said it was not
Naomi's fault because she was doing her job as usual. Sometime later, Naomi, who became closer
to Kosuke after their first meeting, decided to date him.
The film ends by showing Kosuke and Naomi having dinner at a fancy restaurant at the Cortesia Hotel.
The moral that can be learned from this movie is
that although we must speak and be kind to everyone we meet, we must not
forget to always be careful because not everyone looks good and weak like their appearance.