Unite against chaos, in an all-new open world adventure where the Justice League go head-to-head with Mr. Mxyzptlk, a powerful prankster from the 5th Dimension. Suit up as Batman, Wonder Woman and Superman and go face off against some of the most powerful Super-Villains in the DC universe; including Bizarro, Starro the Conqueror, Clayface and many more in an epic battle to bring peace to Happy Harbor.