Goku's next task in his training is to hit Gregory, a super fast grasshopper, with a heavy hammer. King Kai is amazed to see how quickly Goku can conquer the gravity and decides to teach him the ultimate techniques called "Kaio-Ken" and "Spirit Bomb". One day, King Kai reveals more to Goku about his Saiyan heritage. Goku learns that the planet Vegeta had vanished and he is one of only four Saiyans that survived. Goku will have to confront the rest of the surviving Saiyans soon!