In the first movie colonel Zorin is trying to find a stolen "Saint Luke" painting.

In the second movie colonel Zorin is trying to find a stolen "Black Prince" diamond.

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.