Hämsterviel sends an upgraded Babyfier to turn Stitch into a child so Stitch would be easier to catch. Instead, Babyfier turns Yuna and her classmates into kids. With Tigerlily more preoccupied for an upcoming date, Stitch is running himself ragged keeping the kids in check.

It's Yuna's birthday, but she thinks everyone has forgotten...even Stitch! While preparing Yuna's surprise party, Stitch falls asleep and Hämsterviel sends Remmy to trap him in his own dreams, causing Stitch to get sick. Yuna and Jumba most go inside Stitch's head to catch Remmy before Gantu and Reuben capture him.