Tiger Cage is a Hong Kong action thriller centered around a group of undercover police officers entangled in corruption and crime. The story follows three officers—Jackie, Bobo, and Wong—who infiltrate a gang involved in drug trafficking and illegal arms dealing.

As they dig deeper, they discover that corruption runs high within their own police force, leading to tensions, betrayals, and fierce confrontations. The team struggles to expose the truth while staying alive, facing deadly ambushes and moral dilemmas.

The movie is famous for its gritty action scenes, realistic fight choreography (thanks to director Yuen Woo-ping), and intense emotional stakes among the characters.