Collects X-Men: Hellfire Gala 2023, Free Comic Book Day 2023: Avengers/X-Men (Avengers and X-Men stories), X-Men Unlimited Infinity Comic (2021) #100-105, Iron Man (2022) #8 and the Hellfire Gala Variants. The Fall of X begins here! The Hellfire Gala is always the biggest event of the season, but this year's party will change everything for Krakoa. What was meant to be mutantkind's biggest night - including the results of the latest X-Men election - becomes their biggest nightmare! All of your favorite mutants are going to be left reeling after this one - a story filled with shocking revelations, stunning betrayals, horrifying tragedies, impossible deaths…and, of course, the most glamorous looks of the year, all in one can't-miss package! Plus: Who is the new Captain Krakoa? What machinations of the evil Orchis will reunite Rogue and Captain America? Then see the Hellfire Gala from the perspective of the candidates who lost the annual X-Men Vote. And as the Gala is underway, can Iron Man stop the new Stark Sentinels by himself?