In the first film of the series "The Machinist", the top killer Arthur (Jason Statham) who pretended to be dead retired and lived a peaceful life like an ordinary person. In a seemingly unexpected incident, Arthur's confidante May (Michelle Yeoh) asked Arthur to rescue the mysterious woman Gina (Jessica Alba) who was repeatedly beaten. Unexpectedly, Arthur, who has always been immune to love, fell in love with Gina, but his peaceful life was broken. Five years of life away from right and wrong were calm. Arthur thought he had said goodbye to his past career as a killer, but fate was hard to beat. Someone secretly targeted him, and the mystery of Arthur's life also surfaced. It turned out that when he was young, he and a group of children were captured by arms dealers and trained to play with guns and kill people. Arthur, who couldn't bear it, escaped from the arms dealers, and one of his friends grew up to become the successor of the arms dealer and the biggest villain in the film. The villain found Arthur and kidnapped his beloved Gina, forcing him to assassinate the three most dangerous people in the world. In order for him and his lover to escape, Arthur was forced to work as an assassin again. He had to complete a series of impossible assassination missions within a limited time. Arthur knew that the villain was cruel and would not let him go in the end. After successfully assassinating two targets, Arthur and the third target, Adams (Tommy Lee Jones), the head of another large-scale arms dealer, formed an alliance to deal with their common opponent together. So, can Arthur finally escape with Gina, and can the peaceful life continue...