Robert Heffler is a single father of three daughters. Three years ago, he asked to be transferred from the crime unit of a hotspot district to Berlin-Köpenick as a dispatcher. Kay Freund is young, willing to take risks, a workaholic and brand new to the police department. Due to a lack of staff, the department head desperately turns to former chief detective Heffler and asks him to support the new detective. Out of necessity, he agrees, albeit without his daughters' knowledge.