After the brutal murder of two British agents, secret agent Quiller (George Segal) is assigned to West Berlin where he must uncover the operations of the mysterious neo-Nazi organisation believed responsible. His methods of exposing this menace are as unorthodox as the ruthless men he encounters. His investigations lead him to school where he falls for beautiful teacher, Inge. Soon after this encounter he is brought before the menacing "Oktober", Reichsfuhrer the man in charge of the new Nazis. A dangerous game ensues of uncovering the truth, but at what cost?