A stable mentality, exquisite techniques, and invisible killing are necessary characteristics for a top killer. Arthur (Jason Statham) has been in the industry for many years, and with the help of his former partner Harry (Donald Sutherland), has become an excellent killing machine. Arthur received a new mission, and the assassination target was Harry. Although Arthur couldn't bear to do it, he finally decided to send Harry off himself after clearly knowing that Harry would not escape death. Harry's son Steve (Ben Foster) is determined to learn from Arthur in order to avenge his father. Under Arthur's training, Steve gradually mastered the necessary skills as a mechanic and cooperated with Arthur to complete assassination missions one 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 and Tiger Iron Steel"), with an investment of about 40 million US dollars.