Spoiler-Safe Summary

safe read

Cell prepares to decisively challenge Gohan and the fate of Earth, prompting Gohan to muster an unprecedented surge of strength inspired by Goku's telepathic encouragement during a critical battle.

Full Plot Summary

spoilers

Cell is through playing games, so he decides to take out Gohan, and the Earth, once and for all. While powering up his Kamehameha wave, he explains how he became Dr. Gero's "ultimate perfection". Gohan thinks this is the end of the world, but suddenly Goku begins to speak to him telepathically through King Kai. He tells Gohan that he has the strength and that he cannot give up. So, despite only being able to use one arm, Gohan powers up the biggest Kamehameha wave he can maneuver and aims it directly at Cell, just as Cell releases his wave.