While on the way to Mistralton City, the group stops to have lunch. However, a heard of Bouffalant stampedes towards them and causes Iris, Axew, Snivy, Tepig, and Oshawott to get get separated from everyone else. While trying to find Ash and Cilan Iris runs into Nurse Joy who explains that the Bouffalant and very territorial and will attack anyone who is not a Bouffalant. In order to find each other and get out of the area everyone must now wear disguises to avoid being attacked.