An undercover intelligence agent is caught between Helsinki law enforcement and drug dealers. Meanwhile, in Brussels, a woman bound for Helsinki becomes a drug mule.

At the hospital, Zamira falls into a critical condition, while Viita is surprised to find an armed guard at her room. Back at the centre, Mari finds Zamira's forged passport and confronts Almaz.

Mari discovers that Zamira has escaped from the hospital. Viita sees Juri and gets suspicious. When Mari finds Zamira, Zamira forces her to get the passport.

Mari tells Viita the truth about Zamira/Madina and asks him to work with Security Intelligence to find out why she is in Finland. Meanwhile, Juri lures Jari Holma into a trap.

Mari and Viita try to find out the identity of the girl in Madina's photos. Viita's superior tells him to find out more about the mysterious Mari.

Karla is furious with Mari for taking steps about Alba. Juri meets up with Madina and gives her a dangerous task, while there has been a break-in at Mari's apartment.