X-Men: Phoenix - Warsong #[nn]

In "Phoenix: Warsong Part One," the Stepford Cuckoos answer the distant, haunting call of the Phoenix Force, their minds overwhelmed despite the X-Men’s desperate efforts to stop them—Cyclops, Emma Frost, Beast, Wolverine, Colossus, and Kitty Pryde racing to contain the surge. As the Cuckoos rise into the sky, their bodies alight with cosmic fire, the dead among them stir in their graves, and the world trembles at the return of a power too ancient to ignore.

In "Phoenix: Warsong Part Two," the X-Men race after the Cuckoo sisters, now wielding the Phoenix Force, as the Blackbird cuts through the sky. With the mansion haunted by reanimated Cuckoos and the Weapon Plus complex hiding a chilling secret, Celeste, Phoebe, and Mindee face a new threat alongside SHIELD agent Jake Oh—while the full scope of the Phoenix's power begins to unfold.

In the heart of the Weapon Plus complex, Celeste, Phoebe, and Mindee face a chilling revelation as they confront a chamber brimming with their own cloned sisters. With Phoebe and Mindee trapped in bio chambers, the X-Men push through the facility’s defenses—Cyclops, Emma Frost, Beast, Wolverine, Colossus, and Kitty Pryde—only to uncover the truth: John Sublime forged the Stepford Cuckoos from eggs stolen from Emma Frost herself. As the team struggles to contain the escalating threat, Celeste’s connection to the Phoenix Force erupts, and with a surge of power, she soars away into the unknown.

In "Phoenix: Warsong Part Four," Celeste struggles to wrest control from the Phoenix force consuming her, while the X-Men race against time to stop her—and Kitty Pryde uncovers a deadly Weapon Plus machine fueled by Cuckoo clones, designed to unleash the Phoenix's power against all mutants. With Emma Frost attempting to reach her daughters through a bio chamber and the full force of the Phoenix now overwhelming all three Cuckoo sisters, the mutant killing machine begins to awaken.

In "Phoenix: Warsong Part Five," the Stepford Cuckoos—Celeste, Phoebe, and Mindee—grapple with the overwhelming force of the Phoenix as they confront the deadly legacy of Weapon Plus. With the X-Men watching, Celeste makes a desperate stand to stop her sisters from weaponizing the Phoenix, destroying the hordes of cloned duplicates in the process. As the sisters turn their hearts into diamonds to contain the cosmic power, the fate of the Phoenix hangs in the balance.