Residents of an apartment building are jolted awake in the middle of the night when several cars go up in flames in the parking lot outside. Was it arson? Police officers Kenneth Tamm and Marlene Ebert from Altona secure the area, warn residents, and begin their initial investigation. Meanwhile, a night of partying on the Reeperbahn ends abruptly for a young woman in the back of an ambulance. The suspicion: someone may have slipped a date-rape drug into her drink. Officers Lena Priebusch and Eric Zeitschel from the Davidwache take over the case.