When Joachim learns of Antonia's trouble with the antique dealer, he decides to intervene as a mediator. He makes sure that Antonia can buy back the candlestick at the same price she received. By chance, the antique dealer notices Antonia's earrings and draws her attention to the fact that they are very valuable. He offers her 500 marks for it. Should she sell them? Marc and Till prepare the party. Everything seems perfect, but then they suddenly realize that they haven't organized records or a DJ. Armin is the savior in need. He promises to be in the ruin on time with his records and to provide music. Shortly before closing time, Armin learns that he also has to take over the following program because a colleague has fallen ill. Armin is horrified - without him the party threatens to fail. Marc and Laura get into an argument because he's not keen on her showing up at the party. Deeply offended, Laura takes revenge by telling Marc's parents that he skipped school. Joachim then forbids his son to leave the house.