Two men named Ivan Ivanovich and Ivan Nikiforovich become friends but end up falling out over a silly misunderstanding. Their attempts to reconcile lead to one comedic situation after another.

Two skippers and their military ships are participating in big maneuvers.

Criminal Investigation Officer Sergei Voronin takes his position by vocation. He created a club of young friends of the police, in which the guys go in for sports and meet interesting people. But he is worried about the company of guys who fell under the influence of a cynical high school student Nikolai Boyko, who "confuses robbery with prank."