The student rowing team of the Moscow Aviation Institute (MAI) was defeated in the competition. The coach drops the team and leaves, taking the best rowers with him. The remaining athletes decide to assemble a new team, and the management of the institute appoints a new coach for them — a teacher of hydrodynamics.

A sailor spends only one day on a shore but during this day he meets a lot of people and even meets a girl who is going to wait for him.

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.