Heiner works in a mine, drinks beer, and goes to bed with other women, except from his wife, because of his baby son and the neighbours downstairs. But she does not feel like giving up all the fun for so long.

"Bullenkloster" is the name given to the Ruhr miners' single home. Heinz Lenz has lived there since his divorce from Gisela. When he returned to the mine, he met his buddy Jupp again. Jupp persuades him to enter the ring once again. Only when Trudi promises him something, he agrees, but loses in the big fight. Through Jupp's mediation, he meets Gisela, who picks up their son. At first he only wants to see his son from a distance, but when he sees him he decides to start all over again.

A fifth part of the series of erotic comedies based on the novels by Hans Henning Claer.

The trusted guys Jupp and Erwin once again turn the coal pot upside down. When they share their war experiences at a pub evening, the whole thing ends in a wild brawl. To Erwin's chagrin, Lucky's Italian relatives show up, who want to marry the canteen owner's daughter. The wedding celebrations turn out quite differently than planned.