The Justice Lords hail from an alternate universe where the Justice League decided to enforce law and order through any means necessary. Years ago, the Justice League defeated them, and Wonder Woman returned to their world with them to make sure they stayed in check. But something went wrong. Now, Wonder Woman is back in the world of Batman Beyond, and Superman and Bruce Wayne sense that she's hiding something. As Terry McGinnis takes a dangerous trip to the Justice Lords' world to find out Wonder Woman's secrets - and encounters a version of himself whose life took a very different path - the Justice Lords return to our Earth in search of Wonder Woman.