When Rolands and his friends' amateur movie seen at his 18th birthday party unfolds as a crime testimony, fragile bond between people threatens to break completely.

Captain Jack, this is actually an ordinary girl, she is an informal leader among the boys, loves the sea very much and spends a lot of time on the decommissioned ship Signal. The film tells the amazing story of the Signal team, which during the war saved the lives of Soviet prisoners of war, among whom were Gunar and Mitya.