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.

The amusing adventures of the young builder Pasha Gusarov began from the moment when he met and fell in love with Katya on the train, who was going to conquer Moscow. Happiness makes a person careless, and the station is just the place where you can lose it. But it is at the station after all kinds of adventures that they meet again and now they will never part.