As The Void approaches, reality itself begins to unravel. The skies darken, time warps, and dimensions bleed into each other. The Watch, still recovering from their previous defeat, allies with the girls in a desperate bid to stop the coming apocalypse. The girls, now working alongside their former enemies, prepare for the final battle.

The confrontation takes place at the heart of Nova Academy, where the alien artifact acts as a beacon for The Void's arrival. The battle is a cosmic spectacle—flames, energy blasts, and teleportation across dimensions. The fate of the universe hangs in the balance.

Carol, empowered by the alien artifact, taps into its full potential, using it to enhance her strength and energy manipulation. Scarlet becomes a living embodiment of flame, her powers now reaching the cosmic scale, capable of burning through dimensions. Natasha, mastering her teleportation, opens portals across realities, using them to outmaneuver The Void's minions.

Jean, as the Phoenix, takes on The Void itself in an epic, universe-shattering battle. But even her power is pushed to the limit as The Void reveals its true form—a monstrous, shifting mass of darkness that devours everything in its path.