Erwin Becker is threatened by a sinister guy who advises him to get out of the town if his health is dear to him. Erwin suspects that Robert Linden is behind it, but is wrong; Martin Sommer moves out when his mother's boyfriend "invades" the apartment. Ursel's dream of an intact family life is over; Alex tells her father that she wants to continue working with Peter in the home. Robert Linden can imagine the deeper reason and reacts uncontrollably. After all, Alex and Peter are half-siblings - even if they don't know anything about it.