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.

Anatoli Kuzmich retired and received a separate apartment in a new house. He and his wife are happy and make bright plans for the future: how they will go to theaters, museums, read their favorite books. But their daughter Lyusya suddenly gets married. Not wanting to part with her, Korolyovs persuade the young spouses to live with them in a new apartment. Soon a child is born, and gradually life together becomes unbearable...