In one night, in one room, three strangers–a thief, a retired policeman, and a delivery guy–are all present during the murder of the room's occupant. As the trio tries to figure out this bizarre situation, the stakes are raised when they discover a huge pile of cash. They soon realize that the only way to get out alive is to unravel this mystery. What initially seems like a coincidence, turns out to be destined from the beginning.

The story is based on the 57th episode of Journey to the West - "The Real Sun Wukong", in which Sun Wukong is trapped in a mysterious cave by the Yellow Eyebrows Monster. With the help of his best warrior, the King Bull Demon, he sets up a field of life and death for the little demons to fight for their lives, and when they die, he takes their spiritual power and pours it into the mud to create the Six Eared Macaque Monkey, which tries to replace the real Monkey King. The monkeys disguised as monkeys in Mount Huaguo and spent their days with Sun Wukong. He is accustomed to fighting alone and is forced to join forces with other demons to save himself, but he gradually realizes the true meaning of the word "Great Sage". In the end, Sun Wukong is reborn from his stone heart and escapes from the cave in a duel with the Yellow Eyebrow Monster.

Mr. Wu, a Hong Kong movie star, is kidnapped in Beijing by Zhang Hua's gang. The police quickly form a task force and begin the search, ignoring that detectives in charge have only twenty hours before the deadline.