A cartoon version of the Greek myth of Labyrinth.

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.

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.

Ivan Brovkin finishes serving in the army with the rank of sergeant and, together with a group of comrades after demobilization, decides to go to the development of state farm. He arrives at his native collective farm and meets there a cool welcome: the chairman of the collective farm, the bride Lyubasha and mother — consider him a traitor. The planned wedding is canceled, and Brovkin leaves for the state farm. Brovkin comes to the state farm at the time of plowing the land. He joins the team. Winter passes after working days. In letters home he writes that everything is fine with him. News about how Ivan lives is spreading throughout the village. Lyubasha is seriously thinking about running away from home to the state farm...

It is May 1912. Thirteen political prisoners are being tried in a naval fortress of Kronstadt. They are sentenced to death by hanging. A clandestine Bolshevik organization decides to free the prisoners during their transfer to the place of execution. Vasily Panin, a junker of a school of naval engineers, is one of those entrusted with this dangerous task.