Mitch, the ex-leader of a London violent firm known as The Guvnors, has left his life of violence behind for 20 years and now have a happy family. Shanko, a local gangster, learns of the reputation of The Guvnors and challenge Mitch but then is humiliated by another member of The Guvnors, Mickey. This leads to a brutal retaliation of Shanko's clan and a reuniting of The Guvnors, and a gangland warfare starts and spans two generations of the families.