Contemporary Moscow. After a car accident, champion athlete Sergey Borozdin suddenly has a psychic ability to see past events. When he becomes a suspect in a series of murders, he is forced to use this ability to find the real killer.

　　Contemporary Moscow. While riding her bicycle one day, Alyona, a shy librarian, accidentally collides with Liza, a dazzling blonde. When she wakes up in the hospital, she discovers that she and Liza have exchanged bodies.