Once a legendary assassin, JIANG Song vanished from the underworld, consumed by guilt. When his daughter’s life is threatened, he is forced out of retirement and reluctantly teams up with his former partner HAN Yan, with whom he has a falling out, to take down the heir of a corrupt political crime syndicate. But fate strikes back with brutal irony. Jiang’s attempt to save his daughter leads to her tragedy, driving him toward one final act—to break the cycle and finish what should have ended long ago.