The dramatic story of an assassin who vows revenge for the murder of his family. As Nazi Germany plunges the world into war, Stefan Hirsch escapes from Germany and is trained to be an assassin by the SAS - the most elite fighting force in the world. His mission: kill Nazi officers and assassinate the man responsible for sending thousands of people to their deaths.

A massive search is undertaken to discover the spy called Snake, and when Stefan's identity is finally discovered, he finds himself in a final confrontation with his family's killer.