After visiting her parents, Karen Kohrt and her husband Ben start arguing on the way back home -as usual. Some moments later, he loses control over his car and drives against a pier. While Karen dies, her sister Anja survives seriously injured. Tim, who always cared more about his job than his family, has to look after his little son Jonathan who stopped speaking after the accident, but also fights against his parents-in-law who accuse him of manslaughter through culpable negligence. Besides, he learns that Karen had an affair with her best friend Corinna...