In the bustling city of Hong Kong, a once-prominent judo champion named Sze-to Bo leads a reclusive and disheveled life as the owner of a small bar. Once passionate and celebrated for his talents, he now drowns in alcohol and regrets, haunted by past glories and a mysterious downfall. Sze-to's world is abruptly disrupted when Tony, a vibrant and ambitious judo practitioner, enters his bar, determined to challenge him and reignite his fighting spirit. Alongside Tony is Mona, a spirited young singer looking for her big break, who becomes entangled in their struggle. As these three lost souls interact, their lives intersect in surprising ways, forcing Sze-to to confront his past and uncover the reasons behind his withdrawal from the sport.

Meanwhile, the backdrop of Hong Kong's neon-lit streets and shadowy corridors provides the setting for a series of confrontations and encounters. Sze-to's path intertwines with those of old friends and rivals who reemerge, each bringing their own issues and aspirations. As Tony pushes Sze-to toward redemption, Mona seeks her place in the world, revealing deeper layers of her character. Their journey is fraught with trials, testing their motives and resilience. The impending challenges ahead will demand not only physical prowess but also emotional growth and reconciliation with their own inner demons.