“Justice is never simple. Revenge is never clean.”
Beyond the Sin (2025) is a gripping Hong Kong action drama directed by Man Ki Kwok, starring Louis Koo, Gordon Lam, and Karena Lam. At its core lies a brutal crime, a grieving father, and a descent into the moral complexities of vengeance.
Lok Jat Jin (Louis Koo), a principled and seasoned policeman, is devastated when his only daughter is found murdered. As the investigation unfolds, suspicion falls on Sung Ging Naam (Gordon Lam), a man already teetering on the edge of desperation. Yet despite mounting evidence, the justice Lok seeks remains out of reach.
Driven by grief, Lok’s pursuit intensifies, but what he uncovers is far more disturbing than he anticipated. A tangled web of corruption, betrayal, and systemic rot challenges everything he believes in. As his quest veers closer to obsession, he must confront the unsettling truth: when justice fails, vengeance can leave no one clean.
Blending psychological tension with explosive action, Beyond the Sin examines the fragile line between duty and obsession, morality and vengeance. With Louis Koo delivering one of his most emotionally charged performances, the film pushes the boundaries of conventional crime thrillers.