1991. A new immigrant is murdered in Jerusalem. The killer engraved the number 37 on her forehead. Suspicion falls on Nikolai, the murdered woman's husband. Yehuda Jersey, the detective in charge of the case, doubts Nikolai's guilt and discovers that similar murders have happened in the USSR.

Yehuda tries to decipher the connection between Masha Kogan, whose details were found at the scene, and the murder of immigrant. Andrei claims that Masha is cooperating with the killer, and Yehuda investigates this direction.