Ash and friends arrive in Cherrygrove City where they have an encounter with a Quagsire. It steals the GS Ball and runs away. Officer Jenny tells them that the Quagsire do this every year on the night of the blue moon. Not wanting to wait for the GS Ball to float back down the river, Ash, Misty, and Brock follow the Quagsire up the river.

Team Rocket can't believe their luck when the Blissey employed in a Pokémon Center willingly gives them the center's entire food supply. As they abscond with the grub, however, an collective pang of conscience tells them to return their ill-gotten booty. However, they are ashamed lest this act of decency ruin their carefully cultivated reputation as troublemakers.