A few days after Daisy's 7th birthday, she is now permitted to explore the world around her. She meets Peach, the 6-year-old princess of the Mushroom Kingdom. They do some short activities and instantly become friends. The two promise to be friends forever. However one day they get into an argument into which one of their kingdoms is more profitable.
After quarreling, Daisy is too angry to have fun with Peach anymore. The two grow up seperately, despite coincidentally falling in love with two plumber dudes who are brothers. (you know where this is going...)
When Daisy is 15 and Peach is 14, they see each other in an open field. As Peach tries to reconcile with her childhood friend, a Koopaling wakes up, which alerts Ultrakitty, who chases Peach down a ravine.