On their way to Nacrene City, the gang is harassed by a group of schoolchildren with the Garbage Pokémon Trubbish. They head to a nearby Pokémon Daycare and kindergarten where they learn from the kids teacher Miss Daniela that the kids found the Trubbish at the garbage dump and decided to bring it back to the school. However, Miss Daniela told them that the Trubbish could not stay and brought it back to the dump, only for the kids to bring it back and form a gang called the Trubbish Squad and barricade themselves in a tree house surrounded by garbage. Ash goes up to the tree house to convince them that the Trubbish has to go, but is attacked by the group yet befriends them as well. Elsewhere, Team Rocket is given a fake meteorite and are told that they will get more information later. Back at the school, the Sandile with the Black Glasses arrives and the children have Trubbish fight it. Miss Yuri then decides that she should battle the Trubbish Squad to determine whether or not Trubbish should stay. Ash challenges her, as he has joined the squad, and she sends out her Deerling to fight Pikachu. But during the fight, a pile of garbage falls over and almost crushes one of the kids and Trubbish. However, Miss Yuri got in the way, saving them. After the fight, she decides that Trubbish can stay and everyone cleans up the school. Before Ash and his group leave, the owner of the Daycare gives Ash a Pokémon Egg.