During a training battle against Ash's Grovyle, Brock's Mudkip evolves into a Marshtomp. However, Brock's new evolved Pokémon accidentally hits a girls Flaaffy but is able to heal her Pokémon through a drug store. While there, Brock and Marshtomp both want to date the girl alongside her Flaaffy. However, little do Brock and Marshtomp know, the girl and her Flaaffy have feelings for someone else.