Dragon Ball GT

Goku, the hero who destroyed the evil of Frieza, Cell, and Buu in DBZ, learns that an old foe, Emperor Pilaf from DB has captured the 7 magical Black Star Dragon Balls, which, at the cost of the planet the balls are on, can grant any wish. Pilaf wishes that Goku is a child, and Goku becomes a child. In order to save both the planet and restore Goku to adulthood, Goku must allience himself with Trunks and his grandaughter Pan to find all 7 Balls all over the universe. Over time, they encounter foes like Baby, Super 17, and the invinsible Shadow Dragons.

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