Tack wants to help his new neighbor Grabby to build his house, but Grabby just does everything himself. But they'll have to learn to work together to save Grabby's house from an unexpected mishap.

When Kate and her friends take Rumbly on a trip to the moon, Mim-Mim finds out that doing things you've never done before can lead to new and surprising discoveries.

Boomer has a frisky new critter friend that he wants to keep as a pet, but its hard shell and high speed are causing trouble all over Mimiloo.