As the heroes sail to May's next Contest, May finds a boy named Harley. She speaks to him a bit and meets his Cacturne and eats his cookies. Harley is annoyed at the girl, who becomes his rival that he wants to crush. During the Contest, Harley gives May some false advice, which May accepts, only to find out Harley tricked her. Just as she faces Harley, he uses another trick up his sleeve to deceive May even more, wanting her to be defeated.

While on their journey across Izabe Island, Ash and his friends meet a girl named Samantha, who performs her ribbon dance in various towns, and her Mawile, who develops a crush on Brock's Lombre. In the next town, Team Rocket takes Mawile, but ends up taking Lombre by mistake. Now Ash and his friends must save Lombre and Samantha's show.