The story is set in the vibrant, chaotic Metro City, known for its underground fight clubs and shadowy criminal underworld. Poison, a savvy promoter and occasional troublemaker, runs a notorious fighting circuit called "The Cage". Her events attract the most skilled fighters, adrenaline junkies, and even criminals seeking to make a name for themselves. But when a rival gang leader starts targeting her fighters and sabotaging her business, Poison finds herself in over her head.

Enter the protagonist: a skilled but reluctant fighter, who has been trying to stay out of the underground scene after a tragic incident. Poison, impressed by their fighting prowess during a chance encounter, convinces them to help her expose the rival gang's scheme and restore order to her circuit.

Reluctant at first, the protagonist agrees after realizing the gang's actions threaten not just The Cage, but the city's already fragile peace. Together, Poison and the protagonist embark on a journey filled with high-stakes fights, daring heists, and moments of unexpected camaraderie.