Dragon Ball Z Movie 13: Ryuuken Bakuhatsu!! Gokuu ga Yaraneba Dare ga Yaru

Gohan and Videl are persuaded by the mysterious Hoi to gather the Dragon Balls and open an ancient music box. Inside is Tapion, a warrior who sealed himself away to contain part of the monstrous Hirudegarn, but freeing him allows the creature's divided body to begin reuniting on Earth.

Trunks forms a close bond with the solitary hero as Hirudegarn grows beyond the defenders' control. When even their strongest attacks fail, Goku must unleash a new technique while Tapion confronts the burden he has carried across worlds.