In order to pay the bill for the demolition of the tree house, Marc, Antonia and Till try everything possible to get a summer job ... Armin decides to make his first report about the joys and sorrows of a shared flat ... Frederike and Irene are almost finished with their advertising concept. The next day, two more photos have to be selected and then they can send the concept by courier to London. Everything is going according to plan. But not for Chris, his advances with Frederike don't bear fruit. That's when Till gives him the idea to try unusual means with her. Chris surprises Frederike in her office with a Chinese lunch. In a celebratory mood, he showers the presentation folder with sauce.