Timofey Suvernev comes to Moscow from a distant island to study. Tim successfully passes the exams at the institute, and immediately plunges into a turbulent student life. Through hard work and study, he achieves brilliant success, his student work, which he wrote together with his classmate Galtsov, receives a gold medal at the competition.

A pianist named Garvey, while traveling on a tour, gets off the train to buy cigarettes, and learns from a salesgirl that the cities imagined by Grin really exist. Forgetting about his tour, he goes to one of these cities, where he meets the captain of “The Waverunner”…