The city of Stralsund’s criminal police has a new boss: Gregor Meyer, who had previously been responsible for internal investigations. While this doesn’t disturb Inspector Nina Petersen, it has an unsettling effect on her colleagues Karl Hidde and Benjamin Lietz. Are they hiding something? Is Meyer checking up on them? The situation gets out of control when Nina and her colleagues are called to site of an attack on an armored car by heavily armed criminals.