In the darkness beyond, a looming threat waits. Terry McGinnis defeated the evil A.I. controlling Neo-Gotham and asserted himself as the one true Batman, but his next battle will bring him to the remains of Old Gotham. When children begin to go missing, Batman Beyond will have to venture underground, led by Kyle the Catboi, whose sorcery was obtained by the master magician himself, John Constantine! What happened to the green of the city? Where did all the magic go? And which villains never left Old Gotham? All these questions will be answered by the red-hot creative team of Collin Kelly and Jackson Lanzing (Batman - One Bad Day: Clayface) and Max Dunbar (Batman: Urban Legends).