The habitual life of the Siberian Tolya comes to an end: his wife is pregnant. The young guy is afraid of responsibility and runs away to watch. But things don't go according to plan. On the train, Tolya meets Kolya, a homeless child. Due to a series of coincidences, wrong decisions and the cunning of a young boy, Tolya is mistaken for a kidnapper, now the police are looking for him. Tolya has to become a nanny and deliver his new ward to his relatives in the town of Kogalym, and in case of failure, lose everything: his wife, job and future.