Alex Summers [Havok]; the Hellfire Club's Inner Circle [Jason Wyngarde; Sebastian Shaw; the White Queen [Emma Frost]]; Katherine "Kitty" Pryde; Carmen Pryde; Terri Pryde; Lorna Dane [Polaris]; Madrox the Multiple Man; Moira MacTaggert; Sean Cassidy [Banshee]; The X-Men [Colossus; Cyclops; Nightcrawler; Phoenix [Jean Grey]; Professor X; Storm; Wolverine]; Hellfire soldiers; Donald Pierce; Harry Leland
The X-Men return to the states, but Banshee stays in Scotland with Moira. Upon entering the mansion, the X-Men find Xavier is back and ready to lead the team again. Prof X identifies a new mutant and the X-Men go to recruit her. The Hellfire Club also tries to woo the young Kitty Pryde into their ranks.
Kitty helps four of the X-Men escape from Emma Frost. Scott and Jean try to beat the Hellfire Club to recruiting Dazzler, the first mutant of the disco era. Jean's Mastermind-induced mind trips continue.
Kitty leads Scott, Jean and Kurt to where the White Queen is holding the rest of the team. Phoenix manifests astounding power in confronting the White Queen. Xavier offers a place to the two new mutants on his team-- Dazzler turns him down but Kitty joins.
X-Men [Professor X; Cyclops; Phoenix [Jean Grey]; Storm; Wolverine; Colossus; Nightcrawler]; Angel [Warren Worthington III]; Candy Southern; Hellfire Club [Sebastian Shaw; Harry Leland; Donald Pierce; Mastermind; Tessa]; Hellfire Soldiers
The X-Men seek out Angel's advice on how to deal with the Hellfire Club as he is a member. The X-Men infiltrate the Club and are beaten by the inner circle. Mastermind works his final mojo on Jean Grey and she becomes the Black Queen of the Hellfire Club. Wolverine is the only X-Man left to mount a rescue.
X-Men [Cyclops; Phoenix [Jean Grey; also as Dark Phoenix on last page]; Storm; Wolverine; Colossus; Nightcrawler]; Beast; Hellfire Club [Sebastian Shaw; Harry Leland; Donald Pierce; Mastermind]; Hellfire Soldiers; Senator Robert Kelly
Jean breaks Mastermind's spell over her and the X-Men battle the Hellfire Club through the Club's mansion. Jean drives Mastermind insane for toying with her mind. Jean snaps and becomes Dark Phoenix.
X-Men [Professor X; Cyclops; Storm; Wolverine; Colossus; Nightcrawler]; Beast; Senator Robert Kelly; Angel; Banshee; Moira MacTaggert; Lilandra; Shi'ar; Dark Phoenix [Jean Grey]; Sebastian Shaw; Harry Leland; Spider-Man [Peter Parker]; Dr. Strange; Fantastic Four [Mr. Fantastic; The Thing]; Silver Surfer; Peter Corbeau
Jean goes nuts as Dark Phoenix, beats up on her former teammates and heads for outer space to destroy a star system while the X-Men are left wondering how to handle their crazy comrade.
X-Men [Professor X; Cyclops; Storm; Wolverine; Colossus; Nightcrawler]; Beast; Angel [Warren Worthington III]; Lilandra; Gladiator; Shi'ar; Jarvis; John Grey; Elaine Grey; Sara Grey; Dark Phoenix [Jean Grey]; Jimmy Carter
Dark Phoenix returns to Earth to face the X-Men and her old life. After a pitched battle with her former teammates, Jean is restored to her right mind after a furious assault by Xavier. As the team is celebrating the purging of the Phoenix force, they vanish into thin air.
Lilandra transports the X-Men to her base so that Phoenix can be killed for her crime of wiping out an entire star system. Xavier explains that the Phoenix Force has been purged from Jean and demands the right to trial by combat when his captors refuse to listen. The X-Men and the Imperial Guard fight on the Blue Area of the Moon to determine Jean's fate. During the battle, Dark Phoenix manifests herself once again and Jean sacrifices herself rather than let the Phoenix loose on the universe.