Scientists uncover forbidden portal technology and begin experimenting with it, but a disastrous accident tears open gateways to countless realities. Powerful visitors emerge, rampaging across the planet and defeating the world's greatest heroes. With hope fading, Pixel Bruce takes action, opening portals across the multiverse to gather heroes from distant worlds. As an epic battle for survival begins, can this unlikely alliance stop the invaders and save their reality before it is too late?