The cunning king Polidekt of the island of Serif sends the young hero Perseus to get the head of Gorgon Medusa, whose gaze turns people to stone. He is accompanied by the god of commerce and profits and the patron of thieves and athletes, Hermes, who pursues his personal interests. Perseus gets the head of Medusa, but uses it to save Andromeda, the daughter of King Kef.

The life of Pavla Brus, a middle-aged, modest but principled woman, suddenly changes with a crush on a drilling foreman. Unable to restrain her feelings, she decides to cheat on her husband, divorce and leave the family. But her youngest son Kuzma, a teenager with an intelligent and piercing look at the world around him, stops her from a rash act, which is shaped by observation of Siberian nature. A philosophical attitude towards banal life processes allows the mother to reconsider her feelings for her husband Tikhon and the failed lover Nikolai.

Olympus. Here are all the most important gods: mighty Zeus, his treacherous wife Hera, handsome singer Apollo, ruler of the seas Poseidon, warrior Ares, goddess of beauty and love Aphrodite and wise Athena. Here is the illegitimate son of Zeus, Hercules - a demigod-half-man. Having missed the Earth, he begs for travel on it from Zeus before sunrise. He is accompanied by an eagle - a cunning and insinuating creature, the same one who once pecked Prometheus and from which Hercules saved him. On Earth, Hercules enters the temple dedicated to him and his twelve feats. There he remembers some of them.