Wandering around wine bars and pubs drinking, thirty-year old worker Oldrich (Petr Kostka), who is celebrating the birth of his son, meets a seventeen-year old lad called Yellow T-shirt Boy (Vladimír Pucholt). Yellow T-shirt Boy is a problematic young man. Forced to leave his job because he kept provoking conflicts, he now finds some satisfaction as a member of a gang led by the failed actor Ancek (Ludek Munzar). He gets no support at home either; his father has vanished without a trace and his mother has been unable to cope. Oldrich learns all this in the small hours of the following day, after waking up next to Yellow T-shirt Boy sobering-up station. The new father is so moved by the young man's life that he starts taking care of the boy.