Imagine receiving a letter from your deceased father, three years after his passing, inviting you to explore an isolated house in the remote regions of China. Driven by curiosity, you embark on this journey. However, upon reaching the location, which resembles a bunker more than a house, you discover that you’re not alone. Four other individuals have arrived, each holding an identical letter. These five characters—Monk, Casino, Black Jack, Shang, and Poker—share a common thread: they are all armed, notorious, and on the run from the law. A mysterious woman opens the door to the house, and once inside, they find themselves trapped. The house is encircled by police, and they are at the mercy of a deranged killer intent on eliminating them. As the plot unfolds with unexpected twists and mounting distrust among them, they realize they have only one hour left to live.