Mike Furlong (Scott Adkins), known as the accidental killer, is a cold-blooded killer. He is the best in his profession. Whether it is the methodical assassination skills or hiding from the police, every mission of his makes his employer satisfied. But one day his beloved was involved in the underground killer world of London and was 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. The script was completed in 2020 and was scheduled to start shooting within the year, but due to the epidemic, the shooting was delayed.