After three weeks, Goku succeeds in catching Bubbles. Goku is issued his second challenge, to hit Gregory with a large mallet. After two weeks of trying, Goku succeeds and masters the planet's gravity in the process. King Kai proceeds to teach Goku the Kaioken attack. On Earth, Gohan's training with Piccolo comes to a head. While the Z Warriors finish their training with Kami and go their separate ways.