In Karin Sanctuary, Goku befriends the two Native Americans, Bora and Upa, who gift him the four-star Dragon Ball, which his grandfather originally gave to Goku. The Red Ribbon sends the professional assassin Taopaipai to kill Goku. Once finding Goku, Taopaipai kills Bora and easily defeats Goku to the point where he thinks he died. After Goku recovers, he decides to revive Bora, but as he first needs to defeat Taopaipai, he climbs the Karin Tower to meet its hermit so he can become stronger. There he meets Karin, a cat that trains him by saying that the water he has can make him stronger. In the end, Karin reveals that it was just a joke to make Goku train harder. After a few days, Goku easily defeats Taopaipai and goes to the Red Ribbon base, demolishing its security. When Adjutant Black tells Commander Red he needs to abandon the base, it is revealed that the only reason Red wanted the Dragon Balls was to become tall. Angered at this, Black fires a pistol into Red's head, killing hi