Stitch and Yuna move to Newtown with Tigerlily as the behest of Gramma due to (in the Japanese original only) Izayoi Elementary School closing soon. While there, they meet Dolores, Jessica, her friends Toriko and Makiko, and Hiroman. Later, Stitch wants to return Yuna's handkerchief, but ends up almost destroying the school, which upsets Yuna. Meanwhile Hämsterviel, on orders from his new partner, Lady Delia, has recaptured the other experiments and begun mutating them with additional abilities. His intent is to capture Stitch so Delia can extract the Neo-Power Chip from within him. Stitch later begins to leave and gets attacked by Plasmoid and Splodyhead, and again destroys the school, which then makes Yuna think Stitch has broken his promise and lied to her. Stitch stays away from Yuna to try to catch the two altered experiments, but gets captured by Gantu. Yuna feels guilty for not believing Stitch and goes to find him at school, but then gets attacked by Plasmoid and Splodyhead. Stitch then saves Yuna and she apologizes to him for not believing him. After hearing about Hamsterviel's failure, Delia tortures him with a bomb.

Yuna is trying to attend Jessica's birthday party in another attempt at befriending her, but Jessica invites Yuna only to humiliate her and have her clean up before and after the party. Hämsterviel is inspired by this and outfits Wrapper with the ability to trap his enemies in indestructible gift boxes.