Teenagers in modern Warsaw: Kuba Brenner wants to become a violinist. Kuba wants to help his very shy friend, Oskar, to meet some girls. Through a series of complicated (and very humorous) accidents, Kuba finds himself in the middle of a meeting of the local Polish Mafia.
Events go from bad to worse for Kuba when some men attempt to rob the gangsters: shots are fired, and two of the bandits, Grucha and Bolec, are wounded.