Mouse is a dark and suspenseful Korean crime thriller that combines mystery, psychological drama, emotional storytelling, and unexpected twists. The series explores whether people are born evil or become evil because of their circumstances, while following characters whose lives become deeply connected to a dangerous criminal investigation.
The first episode introduces the disturbing crimes and central characters while establishing the dark and mysterious atmosphere of the series. It immediately creates questions about the killer and the people connected to the investigation.
The investigation begins to move forward as Moo Chi confronts the Head Hunter while new murders create another disturbing mystery. Ba Reum also finds himself closer to the dangerous events surrounding the case.
New evidence connects recent crimes to an increasingly disturbing pattern. As Ba Reum and Moo Chi begin working together, the investigation reveals clues that suggest the killer may be closer than expected.
The murder investigation takes a darker turn after another shocking crime. Moo Chi becomes increasingly suspicious of Sung Yo Han while a kidnapping forces him to confront another dangerous mystery.
A live broadcast becomes a desperate attempt to save Han Kook while investigators race against time. As information pours into the station, Moo Chi works to narrow down the suspects and uncover the predatorβs motive.
Moo Chi struggles with a devastating loss while the search for Han Kook continues. As he returns to the investigation, new information about Bong Yiβs grandmother and Sung Yo Han begins to emerge.
After undergoing brain surgery, Ba Reum suffers from memory loss and must adjust to a changed life. A year later, he returns to police work and unexpectedly discovers a new body.
Ba Reumβs instincts help Moo Chi investigate the mysterious knot murders, but strange flashbacks begin troubling him. Their investigation leads them toward a suspect who stands out from the others.
Ba Reum discovers a shocking connection between his brain surgery and the memories that continue to haunt him. As his understanding of the past changes, his behavior becomes increasingly difficult to explain.
Ba Reum begins experiencing increasingly violent impulses and fears that something inside him is changing. A new murder that resembles the previous cases raises even more questions about Sung Yo Han and the truth behind the killings.
Ba Reum continues hearing Yo Hanβs voice in his mind while struggling to understand his violent impulses. Meanwhile, Bong Yi encounters Kang Duk Soo again, bringing back painful memories and a new sense of danger.
Ba Reum carefully watches the investigation while trying to stay ahead of the truth. Bong Yi becomes suspicious of Moo Chi, creating another layer of tension as the investigation continues.
DNA evidence found on the murder weapon creates confusion for Moo Chi and changes the direction of the investigation. Ba Reum and Bong Yi begin uncovering connections between different murder cases.
A young boyβs investigation into a cat killer leads him toward a dangerous discovery. Ba Reum and Moo Chi work to uncover what happened while the case becomes connected to the larger mystery.
Ba Reumβs memories begin returning and force him to confront painful truths about his past. Filled with guilt, he considers confessing what he knows and helping clear Yo Hanβs name.
New evidence causes Moo Chi to question whether Sung Yo Han was really responsible for the murders. Meanwhile, Ba Reum continues recovering his memories and uncovering disturbing truths about himself.
Ba Reum finally remembers what happened to his family and begins setting a trap for the mysterious OZ organization. At the same time, Moo Chi discovers an important clue connected to the investigation.
Moo Chi discovers a devastating truth about Ba Reum and begins investigating the connection to OZ. As Ba Reum tries to stay ahead of the investigation, the remaining pieces of the mystery start falling into place.
Moo Chi and Bong Yi move closer to uncovering the truth while Ba Reum searches for the final missing piece of his past. Suspicious evidence begins challenging Ba Reumβs story and brings the investigation closer to its conclusion.
Ba Reum makes a final decision that brings his journey toward its conclusion. As the remaining secrets surrounding the murders and OZ are exposed, the characters finally face the consequences of everything that happened.