Knowhere. A Dead Celestial's Head. Forge and Monet finish salvaging the head of a dead Celestial before transporting it, to turn a phrase, to their proper space and time.
Arakko. The Astral Plane. Jean is engaged in battle with the "virtually omnipotent" Nightmare—a Fear Lord, Class Three Demon, and veritable cosmic threat. We learn that Nightmare "severed most of the Brood from the hive mind," after which "they reverted to form and rallied around new matriarchs." However, Nightmare claims to "hold no sway over the Brood" and that he only "freed them from the mental jail...mutants trapped them in." Jean recognizes that Nightmare is telling the truth but notes that he is "fighting by proxy via the Brood."
Consequently, she decides to awaken "all the souls [Nightmare] has preyed on" so that they may enact their revenge on him. As Nightmare is overwhelmed by his once victims, Jean issues a final warning: "I try never to kill because I can do so without effort, but if you attack me again, I'll snap every atom in your body apart. You'll only exist in books on magic." Before disappearing, Nightmare issues his own final warning: "You speak of breaking bonds, but I promise you—what is one will be two by the end of your day—and then you'll still have the fall of your kind to witness."
Arrako Proper. Just then, Magik and Broo find Jean, and Broo begs her to allow him to "save the Brood that Nightmare turned against me." Jean assures him, "The X-Men will save as many as we can," before instructing Magik to transport them to the rest of the team.
Deep Space. A Random Ship. Scott, Synch, Iceman, Firestar, and Talon are in the process of transporting the numerous alien refugees they saved from the Brood on Refugee Rock. They bat around ideas for "the closest safe port," with Arakko deemed unsafe before Scott notes, "I wish I'd pushed harder for the Atlantic archipelago of Krakoa to become a safe haven for refugees. Another @$#% decision by the Quiet Council."
Just then, Synch and Laura sense something is off with the refugees before one of them transforms into a Brood. Synch alerts Scott while Talon, Iceman, and Firestar fight the remaining emerging Brood. Scott asserts, "The damn Brood will never be able to do this again. I'll fly us into a star if I have to," before Synch assures him that he can clear the ship and uses Polaris' abilities to do so.
Earlier. War Council: The Brood. Bishop, Cyclops, Magik, and Psylocke convene. Bishop asserts that the Brood don't deserve to exist because "if Broo isn't able to maintain a grip on their hive mind, they'll become an existential threat to all life." He proposes several options, "including specialized hybrids of several mutants who could be the top of the spear in a campaign to end them." He also suggests resurrecting the Scarlet Witch's body, having "a telepath enter [its] vacant mind," and simply wishing, "No more Brood." Cyclops considers these options worth discussing, while Psylocke and Magik oppose them.
[The Krakoan War Council vote was deadlocked at 2-2.]
"Out by Jupiter." The Celestial's Head. Monet is in the process of broadcasting for transport and assistance "on X-Men emergency channels" when Magik suddenly arrives with Jean and Broo in tow. Referring to the Celestial head, Forge admits, "I don't know what Krakoa is going to do with this new real estate—but maybe that will be some more fun for us?" And Magik teleports them all to the ship the X-Men have borrowed.
Deep Space. A Random Ship. Just as Magik and the others arrive, Psylocke broadcasts through the emergency channel, "The Brood are running wild, and if you folks feel like suiting up, Rogue, Polaris, Wolverine, Gambit, and I are working with Captain Marvel...and we could use the calvary." Scott responds, "Let's go kill the Brood once and for all," to which Broo screams, "NO, YOU CAN'T!" Scott pushes back, "I don't think I'll let you tell me what I can do. You told us you controlled the Brood, and you didn't. " He points to half-bodies in space. "Those are just a few of the people who have paid the price. My father's at death's door back in the sick bay." Jean intervenes, "But...he lives. Now, it's true Broo has lost control over some of his kind, but some can be saved, and—" Scott interrupts. "Saved?! For what? I know the value of mercy...but not for the Brood." Jean asks, "So...it's genocide, then?" Scott snaps back, "Don't. Do not equate being hard on the Brood with genocide. The Brood represent an existential threat to all life! And at what point are we complicit if Broo loses control of his pets again?" Jean remains convicted: "Then we'll step in and do what we always do." Scott asks, "And how many more will be dead then? Refresh my memory, how is it you dealt with that fungal parasite, Cordyceps Jones?"
Jean spins Scott around and removes his visor. "Look at me, Scott," she says. "What-what are you doing" he asks. She holds back his optic blasts with her telekinesis and asserts, "I want to see your face. Say what you're thinking, so we can all hear." Scott stares at her and responds, "Yeah. I think wiping out the Brood is a great idea." Jean releases his visor and quips back, "How very human of you. Broo and I will gather the ones he can control and go." Scott and the rest of the team head to help Captain Marvel and the others. Scott tells Broo, "Don't try to stop me from killing the ones separated from your hive mind," and instructs Monet to take Corsair to the Healing Gardens. Forge assures Jean telepathically, "Jean, for the ones that you can save, I just created a safe, empty bit of real estate in orbit around Jupiter." Jean thanks him.
Later, Broo asks, "Is Cyclops right?" Jean responds, "Not always. And not today." Broo adds, "I fear he might be...but I will die trying to prove him wrong. We will have redemption." Jean calls his goal noble and orders him to direct the Brood he can control to a. location along their flight plan. She assures him, "We'll save as many of the ones that answer your call as we can. But steel yourself: The ones that are separated from your hive mind will fall."
Jupiter's Orbit. The Celestial's Head. "And you must hide away with your brood...and become xenophobic. How much do you love your kind? Are you willing to shelter in place for the health and safety of everyone? If so, you'll be safe on Knowhere." Brood responds, "Thank you, Jean. I can never repay you, to which Jean says, finally:
"That may be true...but it doesn't mean you can't pay kindness forward. You spoke about redemption earlier. I...don't know what that means for the Brood. But I hope you will find a way to earn it. It won't be easy, but if I can be at peace with what the Phoenix has done, then there's hope for you too. And, Broo...get some sleep.