Olav Hintz, a retired teacher who loves only himself, needs care as he sits in a wheelchair. The nurse, the single parent Trixi has several jobs to complete and gives the care to her 3 children. Chaos is on.

Lawyer Dominique Kuster can feel a professional success for herself when her underage client Stefan, the oldest of three foster children, receives mitigating circumstances. After the court hearing, however, she found out that the foster father Christian Hunziker had a fatal accident in a car. An autopsy reveals that it was murder. Someone has swapped the dead man's insulin for ineffective water. Christian's wife Martina comes under suspicion.