The teenage time-displaced Jean Grey is transported back in time and encounters her adult self. There, young Grey questions older Grey about the Phoenix Force, which has been hunting her. In response, the older Phoenix-empowered Grey takes them to a planet that is under attack from Galactus. After the duo defeats Galactus, the older Grey tells young Grey that the Phoenix is the protector of life. However, as young Grey is about to respond that the Phoenix is responsible for countless deaths — including her own — Uatu the Watcher appears and warns young Grey that this course of action may cause an irreversible butterfly effect. Young Grey chooses not to reply and is transported back to the future.

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