The Hellfire Gala is out of this world as the Reign of X evolves! Mutantkind has a homeland at last, but now they're claiming their own planet. It's time for fireworks, and the highlight of the show is the newly terraformed Mars! It even has its own S.W.O.R.D. station to protect it - but as "Planet Arakko" enters the galactic stage, who will be its queen? X-Corp has a board to staff - which means CXOs Monet and Angel must network on the dance floor, shaking hands and mending fences. The New Mutants are dressed up for getting down - but not everyone is on their best behavior, and someone may face their last dance! Meanwhile, Wolverine and X-Force keep the peace...with help from Deadpool?! Collecting PLANET-SIZE X-MEN #1, X-CORP #2, NEW MUTANTS (2019) #19, WOLVERINE (2020) #13 and S.W.O.R.D. (2020) #6.