RWBY/Justice League (2021)

THE WORLD OF REMNANT COMES CRASHING INTO THE DCU! Grimm are running amok around Gotham, and Batman's on the hunt to find whoever brought these mysterious monsters to his city. But as the trail goes cold, the Dark Knight finds himself face-to-face with none other than Team RWBY! What other effects are taking hold around our world with Ruby, Weiss, Blake, and Yang here, and what does it mean for the future of the DCU?! Marguerite Bennett returns to RWBY with Meghan Hetrick and Soo Lee for an epic tale of adventure spanning every corner of the DC Universe!

Gotham is being overwhelmed by Grimm! They keep appearing in every corner of the city, and the only lead the Dark Knight has is the four mysterious girls he just met. Ruby, Weiss, Blake, and Yang explain to Batman and the assembled Bat-Family how they landed in Gotham. But just as some pieces start to coalesce, a horde of Grimm are converging on the worst possible location: Arkham Asylum!

Forced to retreat from Arkham Asylum and Gotham City after they've been overrun by Grimm, Team RWBY finds refuge with Wonder Woman and the Amazons on Themyscira. But as the world continues to change with the girls' presence here on Earth, who brought Ruby, Weiss, Blake, and Yang here in the first place?

While searching the harbor, Blake, Yang, and Clark Kent come face to face with a trident-wielding boy who can command sea life. But is this princely boy the one taking control of people all over Remnant? And what is his mysterious connection to Clark? Later, the gang comes back together, but each team was unsuccessful in cracking the mystery surrounding the missing huntsmen. As they discuss their findings, Team RWBY is ambushed by their brainwashed friends! They’ll need a savior from above in order to surmount these odds!

Superman's been possessed by a Grimm, and it's up to Team RWBY to stop him! Can the huntresses take down the Man of Steel, or is this the end for Ruby, Weiss, Blake, and Yang?!

Team RWBY returns to Gotham with a plan to help Batman retake Arkham Asylum and send the Grimm back to Remnant. But with time running short and the world merger fast approaching, the girls need to face down a corrupted Dark Knight in order to save both worlds from destruction!

Team RWBY are trapped in the bowels of Arkham as the crazed Batman and Joker-Nuckelavee duke it out. They'll need to make a desperate play to pull Batman back from the brink, but if they can't, it'll be the end of the DCU and Remnant as we know it!