In the life of every father, sooner or later there comes a moment when his wife flies away on a well-deserved vacation, and he is left alone with his own child. It would seem – nothing complicated! Igor, Artyom and the Sauna also thought, not even suspecting which "waterfall" of adventures would cover them with their heads. Exhausted by the "charms" of fatherhood, the guys meet their old friend St. Valentine. Relieving stress over a bottle of whiskey, the guys jokingly dream of their children becoming adults as soon as possible.