Diego, the undefeated underground boxing champion from the borderlands, suddenly receives a tearful, bloody plea for help from his sister—his only family. She has been imprisoned by an all-powerful underground godfather in Las Vegas, reduced to a desperate plaything for the powerful elite. To bring his sister home, the lone wolf Diego storms into Sin City alone. Inside the brutal underground MMA octagon, he becomes a "bloodthirsty demon," taking on top-tier killers in ten seconds and mowing down everyone in his path. He not only wins over a venomous mob wife who betrays the godfather with critical intel, but also captivates a cold, undercover female cop (Sarah), who willingly breaks every rule for him. When the mob godfather tears up their deal, murders Diego's close friend, and tries to use his sister's fate to force Diego to his knees, Diego completely snaps and turns the entire Vegas night upside down. From neon-lit casinos to a desert military fortress, he tears through an armed empire with his bare fists, grinding the once-lofty godfather beneath his heel. "Anyone who touched my sister dies!" Extreme violence aesthetics, a hard-hitting man who fights brutality with brutality, a single man taking on an entire criminal empire—an adrenaline-pumping, satisfying revenge drama.
