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Shibata starts her first day of work at the MPD. She is assigned to the cold case section. Her first case is to figure out how a dead salesman has come back to life.

Shibata and her partner Mayama are assigned a literal cold case at a refrigerated warehouse. Mayama continues stalk the man who killed his sister.

Shibata goes on her first stakeout to solve the murder of a philandering husband. Detective Kondo deals with a mystery of his own.

Shibata and the cold case squad investigate a series of murders at a cursed inn. Mayama is hassled by a reporter about his stalking of Asakura, the man he believes killed his sister.

Shibata sets out to prove a psychic is a fake. Asakura decides to go on the offensive against Mayama.

Chief Detective Kunio asks the cold case unit for help to solve a 15 year old school bombing before he retires.

While Shibata investigates a haunted painting, the case takes a shocking turn. Asakura begins to stalk Shibata.

After a party, Shibata wakes up next to a murdered man. On the run with her friend Maiko, she tries to prove her innocence.

Shibata sets out to prove that Asakura was behind the death of Mayama's sister. The MPD believes Mayama has gone rogue and decides to take action.

Mayama is on the run from the MPD Sweeper Unit. The Asakura case takes a dramatic turn, and the cold case unit will never be the same.

The Sweepers continue to pursue the surviving members of the cold case section. Asakura enacts his final plan to destroy Shibata and Mayama.