When the head of a powerful Taiwanese triad is shot by a mysterious assassin, his eldest son, legendary killer Charles "Chairleg" Sun heads to Los Angeles to protect his mother, Eileen, and his naive younger brother, Bruce — who's been completely sheltered from the truth of his family until now.

But as Taipei's deadliest societies and a new rising faction go head-to-head for dominance — Charles, Bruce and their mother must heal the wounds caused by their separation and figure out what brotherhood and family truly mean before one of their countless enemies kills them all.