When Lyokha, an ordinary guy, accidentally starts an escape of a naive patient from a mental hospital, he does not suspect that he will completely change his life. Kostya, pure and strange, as if from another planet, turns everything upside down: he helps Lyokha find an approach to his autistic son, protect his mother from an aggressive neighbor and restore relations with his ex-girlfriend. And Kostya himself dreams of finding his mother and is preparing to dance at a competition with the girl he inspired to a new life. This is a story about how a person who is considered "abnormal" by society turns out to be the most "normal" person in our world.
