Kami-sama's old nemesis's son has come to exact revenge on Kami-sama for winning the title of Earth's Guardian. After kidnapping Son Gohan and using the dragon balls to gain immortality, he has a final showdown with Goku.
Dragon Ball Z Movie 01: Ora no Gohan wo Kaese!!, DRAGON BALL Z (1989) (ドラゴンボールZ オラの悟飯をかえせッ!!)
