A series for young people, dealing with important educational problems, characteristic of the so-called difficult youth. The protagonists of the film - four boys and a girl aged 12-14 - are in constant conflict with the social order; they are only a step away from the hooligan lifestyle. The film shows the need for the existence of ideals, noble myths and models of behavior in the lives of young people. The characters' dreams are embodied in the romantic character of Tolek Banana, his mysterious personality stimulates their imaginations. The film presents the adventures of a youth "gang" changing their behavior under the influence of Tolek Banana. Thanks to him, the heroes learn friendship and honesty, according to the principle "one for all, all for one".