The Justice League is facing off against a new horror: adolescence! Superman, Batman, Wonder Woman, Flash, Cyborg, Green Lantern and Vixen are surprised to find that not only have they materialized on a strange world called Remnant, but they’ve also been transformed into teenagers. Meanwhile, the heroes of Remnant – Ruby, Weiss, Blake and Yang – find their world has been mysteriously altered. Can the combined forces of the Justice League and Team RWBY return Remnant to normal before a superpowered Grimm destroys everything they know?