Janneke (Margarita Broich) and Brix (Wolfram Koch) are called to a crime scene at night. A young woman, scantily clad, a plastic bag pulled over her head, lies dead at the foot of one of Frankfurt's bank towers. While Janneke arrives early at the secured and cleared crime scene, Brix is late. The KTU isn't there yet either. Janneke goes into the tower alone and gets a first impression of the crime scene, taking photos as so often. Suddenly she hears footsteps behind her. She instinctively grabs her camera. A flash light illuminates the scene a couple of times, then a bang. When Brix finally arrives, he finds Janneke unconscious in the elevator. She is taken to the hospital with a traumatic brain injury. Brix goes alonegets to work and quickly reaches the limits of the hermetically sealed tower.
When Janneke regained consciousness in the hospital, she can only remember vaguely. She is also under strong medication and no longer trusts her own head. Only her photos give her something to hold on to in her extremely hazy memories. The perpetrator himself cannot really be seen in any of the images, only cutouts, blurred details, overexposed fragments. Together, Brix and Janneke try to put together a clear picture of the crime from the contradictory scraps of memory, the photos and witness statements. All threads come together in the tower. The commissioners have to gain access again.