Experiment #375 has been activated; a phantom-like experiment that can inhabit and animate inanimate objects. So when it gets loose in the family's house, it inhabits Lilo's toys and creates all sorts of mess, for which Stitch gets the blame. Can they catch the real culprit, or will Stitch be blamed for everything?

Experiment #258 - Sample

#258 is activated. #258 is a sound experiment, that records sounds and plays them back to people, like a sample. Meanwhile, Stitch is worried about getting his shots.

Experiment #151 - BabyFier

Experiment #151, BabyFier, has been activated, and has the ability to turn adults into babies! Can Lilo and Stitch stop it before every adult on Kauai is turned into a baby again?