Air traffic controller Markus Hofer is partly to blame for a collision between two airplanes in which 83 people lost their lives. Although the incident happened a year ago, he still blames himself, which his wife Franziska can only bear by having affairs. Erik Loth, on the other hand, is full of revenge, having lost his wife and daughter in the disaster and is now determined to kill the pilot responsible. Police officer Harald was on duty on the night of the accident and has been unable to get the images out of his head ever since. One evening, the television reports on the murder of Markus Hofer. Harald knows Erik, the man who killed him, and now thinks he sees him everywhere...