Stefan and Martin, two bachelors, share an apartment as an antidote to their poisonous experiences with women. They are preparing to celebrate the birthday of their friend Peter, due to arrive for dinner with his lovely wife Lilli. To their surprise, he arrives alone. It turns out that Peter has been cheating on his wife for ages but he has just left her for giving him a taste of his own medicine. He decides to join his friends in their “male” household. It all seems ideal – until one day, Martin meets the woman of his dreams…