Quick recap
In the Other World, a careless worker lets the soul-cleansing machine blow up, and the evil energy turns a young demon into Janemba. The chaos opens the gates of Hell, and the dead return to Earth: Gohan, Goten, Trunks and Videl fight old villains, and Gohan drops Frieza with one punch. In the Other World, Goku and Pikkon take on Janemba, but even Super Saiyan 3 isn't enough. Vegeta, who was in Heaven, is given a body and joins Goku. Their first fusion attempt fails, the second works, and Gogeta is born, finishing Janemba with no effort. Everything returns to normal, and Vegeta goes back to Heaven.
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