After prison, Sun revisits his neighborhood, troubled by his father's death and friends' betrayal. He returns to boxing while establishing a new gang called the Bangkok Boys.
Sun deals with painful memories, getting arrested during a confrontation, the injury of his partner and death of his father. Having his life shatter while being questioned by his family, his path becomes clear.
Sun reunites with his old friend Tan and is determined to find out the truth behind his father's death. He takes over his father's warehouse and starts a fight-club, building up his reputation as the "Bangkok Boys" grow in influence.