Arthur’s sister Lou unexpectedly arrives in Lüneburg with her family for his birthday. And Lou and her husband Daniel want to stay longer. Daniel’s architectural firm has been awarded the contract to build the new tech campus. To do this, Lou wants to finally reconcile with her mother Victoria. Eight weeks later, Lou moves to the estate with Daniel and their two sons. But during a dinner, the situation escalates: Victoria can’t contain her old wounds and flees. Gisela, Franka, and Valerie move into the Rose House to make room for Lou. While Franka and Gisela are excited about their new apartment, Valerie is being bitchy. She’s secretly heartbroken for Noah, who’s enjoying his new love with Toni. And then Valerie is caught up in the past: Simon shows up at the door with Olivia and wants to move into the Rose House too. That’s going to cause trouble.