Nerves are on edge in the "Veedel": Shop owner Adil Faras and young mother Nina Schmitz also think something has to be done. They have joined the self-proclaimed vigilante group "Wacht am Rhein" and patrol to make the streets safer. But then the son of the owner, Peter Deisböck, is shot dead during a raid on a pet shop. Max Ballauf and Freddy Schenk investigate. Urgent suspect: native North African Khalid Hamidi. Vigilante leader Dieter Gottschalk immediately calls a vigil for the murder victim. In the heated mood, it is almost forgotten that a student has been reported missing: Baz Barek was on his way home on the night of the murder. The description of the perpetrator could also fit him.