A man staggers onto the motorway, wanders around disorientated and causes a gigantic crash. Semir, who is one of the first to arrive at the scene of the accident, recognizes the man as his old colleague Boris Neumann. But Neumann himself cannot remember anything - he suffers from severe amnesia. A short time later, the body of Neumann's wife is found in a nearby hotel. For Semir's colleague Tom, the case is clear, because all the evidence clearly points to Neumann being the perpetrator. But Semir remains skeptical. He simply cannot imagine that his former colleague is a murderer, and so he suspects Sandra, a friend of Neumann's, who is behaving strangely. But then Neumann and Sandra suddenly disappear without a trace. Apparently Tom was right with his suspicions after all. A hot lead leads to the Maria Laach monastery. When Tom and Semir reach Neumann's hiding place by helicopter, a chase for life and death begins...