After a clash with his incompetent superior, fiery cop Bill Chu finds himself assigned to the Emergency Unit. When a turf war leads to the murder of his friend and former partner, Chu gathers his diverse team of colleagues to take matters into their own hands. Fueled by a thirst for vengeance, they set out to confront the mob responsible for the killing. As tensions rise and danger looms, the group must navigate the criminal underworld and their own limitations in a relentless pursuit of justice.