When supervillain Ms. Goo Goo and Bub Bun start changing everyone into babies, it's up to Guppy Girl and Bubble Boy, with some extra help from Molly's little sister, Mia, to stop her before they also get turned into babies.

Gil wants to be a ninja, but his ninja teacher just keeps giving him random tasks to do; frustrated, Gil is about to give up when another ninja known as Rakunuki comes out and challenges him, and he realizes he's been learning ninja skills all along.