A Soviet cargo ship carrying medical opium gets attacked by pirates of an unknown nationality. The crew is left to die on a sinking ship but they manage to escape and now must fight the pirates for survival.

Shortly after a daring jewelry store robbery, two murders occur in the city. An experienced investigator suspects that there is a connection between these crimes. But there is no proof. At the same time, the gang leader not only does not think of hiding, but calmly communicates with the investigator in the vacation home. He is sure that he has subtly calculated all the moves, and therefore he is invulnerable.

Twelve-year-old Nina's mom returns from a trip and finds out that her daughter is in the hospital. The reason for the girl's state of shock is the loss of her beloved dog. The dog faces many challenges and adventures on the way to his home.