Bella is in a dilemma: She lives with her ex Martin and her new boyfriend Sebastian in a shared flat. Neither does she dare to pour Martin pure wine, nor to quit. Just when Bella has come to an end to the secrecy, a bad news arrives by phone: Two very good, mutual friends of Bella and Martin have been fatally injured. They leave Tom, a two-year-old boy. Bella does not hesitate: Martin and her will take care of the boy. But how should that work in the WG? And what about Bella's relationship with Sebastian?