Sun tries to get in touch with his old friends to bring the Bangkok Boys back together. Despite going their separate ways, their tendencies towards fighting bring back their feelings of friendship. At the same time, Sun accidentally saves Peach, an artist, and their encounter on the roof brings a brief moment of peace to his troubled life. The disappearance of his sister Mei is finally revealed, but an unseen war is also taking shape.

Sun and his gang raid a warehouse along with the support of Tian to recover their property. Meanwhile, Sun and Peace reunite at the hospital and grow closer. Sun and his team's loyalty and trust to each other is tested.