Chris asks Melanie if he is really the father of her child. She is upset that he doubts it. Irene, too, now learns the truth. She and Wolfgang persuade their son to take responsibility. Chris then comes up with a way to help Melanie with his parents. But she refuses ... Armin suffers from the fact that none of his applications are successful. He doesn't know where to get the money for the rent. When Bernd gets a job within a few hours, Armin is offended. Margot reveals to Bernd that Armin is unemployed. He, in turn, babbles to Bernd that all the flatmates want to get rid of him. Bernd is hardly offended. Jennifer and Corinna want to take care of their two roommates and plan a party ... Joachim accuses Regina of licentiousness and severely insults her. She then takes a hotel room. The next day, she comes to the apartment to pack her suitcase. Alexander avoids her. But Marc is ready to listen to Regina. She explains the truth to him. Marc then accuses his father and gives him Regina's address. When Joachim knocks on the door of his hotel room, his wife opens the door for him in her dressing gown. And Gerhard is lying in her bed.