Quand des adversaires mystérieux ciblent sa famille, un membre d'une triade de Taipei met le cap sur Los Angeles afin de protéger sa mère résolue et son petit frère insouciant.

Ever since falling in love, former triad member Ho Keisong has put his former gang life behind to become a chef. Life is good as he and his wife make a good living at their small restaurant and their daughter works as an investment banker. But their happy family life is threatened when Keisong's former triad boss Lau Cheuknam is released from prison. Not only does Cheuknam wants to pull Keisong back into the triad life, but Keisong's marriage is also on the line as his wife was Cheuknam's girlfriend before his incarceration.