Hannover-Langenhagen: a body is found in the air corridor of the Hannover airport, obviously having fallen from an airplane. Detective Chief Inspector Falke, who has been conducting an undercover security check at the airport, is called to the place where the body was found by the head of federal police at the airport Hellinger. He quickly realises that the dead man is not a stowaway who fell from the airplane during the landing sequence but that he is dealing with a murder and a cover-up…