Young detective investigates a complex crime starting with a two movie tickets found in the pocket of one of the criminals.

The love triangle: wife, husband and his mistress, amusingly crumbles because the loving writer is fleetingly infatuated with a third woman, young and inexperienced, rightly believing that an artist needs a muse every day, not a wife and mistress.

Having arrived from the village to Leningrad, the heroine achieved everything she could dream of: she graduated from the Institute with honors, defended her thesis, built and furnished a cooperative apartment. Only here in private life she was not lucky: for some reason, do not hold near her man…

A new shipyard director arrives in the city. New orders began at the factory, but, unfortunately, the new leader had flaws: there was something unusually tough, callous in his attitude to people ...

Police captain Aleshin is investigating a case related to the theft of opium at a chemical factory warehouse. Everything suggests that the offender must be sought among the employees of the enterprise. One of the workers, Frolov, is familiar to Alyoshin in another matter. And although Aleshin is confident in Frolov’s honesty, he suspects something was wrong, seeing how he hides something from him and himself suffers from it. At the dacha, the factory director Vasiltsev killed his stepfather, who turned out to be an unnecessary witness. A trace brings Aleshin to a plant employee, a certain Olga ...

Junior Lieutenant Maleshkin, an unshooted graduate of the school, commands the crew of the self-propelled gun SU-100. All the subordinates of Maleshkin are older than him and much more experienced. The authority of the young commander is tested at every step, he quarrels, then reconciles with his crew.

The plot is based on the defense of Petrograd from Yudenich's troops in 1919.

The heroes strive, at the cost of any trials and sacrifices, to discover the gold-bearing veins and placer deposits the country so desperately needs. Meanwhile, hardened villains operate alongside them, doing everything they can to thwart their plans and intentions—this drives the dramatic tension and the intense events of the production…