A stable mentality, exquisite techniques, and killing without being seen are the essential qualities of a top killer. Arthur (Jason Statham) has been in the industry for many years. With the help of his former partner Harry (Donald Sutherland), he has become an excellent killing machine. Arthur received a new mission to assassinate Harry. Although Arthur couldn't bear to do it, after knowing clearly that Harry could not escape death, he finally decided to send Harry off in person. In order to avenge his father, Harry's son Steve (Ben Foster) decided to follow Arthur to learn. Under Arthur's training, Steve gradually mastered the skills necessary for a mechanic and worked with Arthur to complete one assassination mission after another. Although Arthur never told Steve who killed Harry, Steve still knew that his father was killed by Arthur, and the flame of revenge gradually rose in Steve's heart... This film is a remake of the 1972 movie of the same name (translated as "Dragon Tiger Iron Gold Steel"), with an investment of about 40 million US dollars.