Plot

A Japanese salaryman experiences a harrowing transformation into a living weapon fueled by his overwhelming anger when a gang of ruthless thugs abducts his son. As he grapples with the violent alterations to his body, he embarks on a relentless quest for vengeance. The line between humanity and monstrosity blurs as his rage intensifies, leading him into a dark world of chaos and brutality. Battling both external foes and his own deteriorating sanity, he must confront the horrific consequences of his newfound power in a desperate bid to rescue his child.