Quick recap
The heroes receive a sealed music box from a little old man named Hoi, who asks for help opening it. Inside is Tapion, a hero from another planet who long ago sealed half of the monster Hildegarn inside himself. Tapion wants nothing to do with anyone, but young Trunks befriends him. Hoi serves the wizard who wants the monster freed, and the other half of Hildegarn breaks loose and attacks Satan City. Gohan, Goten, Trunks and Vegeta can't stop it. Goku goes Super Saiyan 3 and punches through the monster with the Dragon Fist. Tapion returns to his own time and leaves his sword to Trunks as a gift.
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