Superman, Batman, Wonder Woman, Flash, Cyborg, Green Lantern and Vixen are transported to the strange world of Remnant and find themselves turned into teenagers. Meanwhile, Remnant heroes Ruby, Weiss, Blake and Yang must combine forces with the Justice League to uncover why their planet has been mysteriously altered before a superpowered Grimm destroys everything.

After teenager Ichigo Kurosaki acquires superpowers from wounded soul reaper Rukia Kuchiki, the two of them join forces to round up lost souls.