As Cell continues his terrifying feeding frenzy across the country, Goku fully recovers from his heart virus and introduces an ingenious training method to surpass the standard limits of a Super Saiyan. He takes Vegeta, Future Trunks, and Gohan into the mystical Hyperbolic Time Chamber, a separate dimension where an entire year of intense training takes place in just a single day. Meanwhile, Cell tracks down the Androids and engages Piccolo in a brutal, earth-shattering brawl. Despite Piccolo's massive power upgrade, Cell manages to slip past his defenses and completely absorbs Android 17. The absorption triggers an immediate, monstrous evolution, transforming Cell into his terrifying Semi-Perfect state and leaving the world in absolute jeopardy.