Strong Hans and Princess Sarah wants to find out why the source that is vital for their village has dried up.

Chief Inspector Johannes Fischer has retired in the meantime. The last case he investigated together with his former boss Konstanze Satorius has been closed, but Fischer is still convinced that an innocent woman is in custody.

Maja Witt and Klaus Burck have been a well-rehearsed team for years, ensuring law and order as police officers in Bremen. At least that's what they try to do. Time and again, however, they are shown their limits. Criminals are set free again, and they themselves get no respect at all. When the arrogant teenager Ahmed Issa spits at Klaus during a mission, this finally goes too far: the two fight back and start to take the law into their own hands, using any means necessary. But the other side is not standing idly by...