Mike Furlong (Scott Adkins), known as the accidental killer, is a cold-blooded killer. As far as his profession is concerned, he is the best. Whether it is the methodical assassination skills or hiding from the police, every mission of his makes his employer satisfied and happy. But one day, his beloved was involved in the underground killer world of London and was brutally killed by his own organization. Furlong had to break his long-ordered and organized life and began to take revenge on the people who did all this. This movie is adapted from a comic book in the 1990s. The author is Pat Mills, and "Dr. Ded" (the 1995 movie version starred by Stallone) is also his work