Doris fights for her position in the company because she wants to lead the forwarding company into a new future. In doing so, she has to take what is probably the highest hurdle: her own mother. The fact that Miriam wants to divorce Joachim is not accepted without a fight. Inès and Etienne, on the other hand, finally want to be a happy family again. But no matter how hard they try, Olivier doesn't play along here. Christiane and Philipp fight against the collapse of their marriage. Both know that something has to change so that a step forward is possible again. In any case, the investigators Grünberger and Leodolter are making progress and are delving more and more into the well-kept secrets of the "Sophianum".

It seems as if time has stood still at the "Sophianum". Or is that what is called tradition? The four friends remember their own school days, and this left deep scars on Miriam. The dispute between her and Joachim over custody ends up in court, and Miriam realizes how hard it is to always do the right thing. Doris faces her mother and finds out that with a mother like Berta you quickly reach your limits. Inès can't believe that Etienne just fled. And Christiane and Philipp are targeted by the investigators.