The Seven-Star Dragon

Goku, Pan, and Giru locate the seven-star dragon. He is creating earthquakes by digging holes in the ground, and he isn't interested in fighting. Goku and Pan follow him while he's digging, and see that he's headed for a city. The dragon creates a massive earthquake, but Pan and Goku, with the help of Super Saiyan 4, are able to prevent the city from being damaged. The dragon gets angry at them and tries to fight, but ends up hitting himself with his own attack. Goku prepares to deal the final blow, but the dragon dies on its own. Goku powers down and Pan catches the seven-star ball, only to find that it still has cracks in it. The ball begins to glow, and Pan suddenly gets sucked into it. The dragon reveals that he was using a mole's body, which is why he was so weak, and now he's using Pan's body. He wants to get Goku's Super Saiyan 4 body, but Goku refuses to power up. He says that he'll fight if the dragon releases Pan.