Simon Lindström, the popular coach of a suburban junior hockey team, is found stabbed to death. Does the murder have something to do with his side project: teaching unaccompanied refugee children to skate? This undertaking has certainly not been appreciated by everyone in their small, sheltered community. 

At the same time, Martin Beck struggles to find a new team leader for the investigative group. But Steinar is becoming more and interested in keeping the position permanently. The question is, can Martin trust him?