One day, Kirby finds a tomato and eats it. While doing so, an evil being named Yin-Yarn takes Kirby into Patch Land, a place made out of yarn. There, Kirby's body becomes yarn. Kirby also has the ability to transform. This was given to Kirby by the tomato he ate earlier. Kirby uses this ability to rescue a boy named Prince Fluff. Prince Fluff says that Yin-Yarn broke Patch Land into different pieces that were held together by magic yarn. Kirby has to help him find the pieces of the magic yarn to restore Patch Land to normal.