In Gotham City, a masked vigilante born from childhood tragedy pursues his war on crime with relentless determination, operating from the shadows to protect the innocent. His struggle against the underworld takes a dire turn when a confrontation at an industrial chemical facility transforms a common criminal into something far more dangerous—a psychotic force of chaos now commanding the city's entire criminal apparatus. Batman must navigate through the corrupted streets and twisted lairs of his nemesis, employing an array of gadgets and vehicles as he battles toward an inevitable final confrontation with the newly emerged Joker, whose descent into madness threatens to consume Gotham entirely.