
Fishtailed preschoolers attend school in an underwater classroom where they learn about science, math and literacy through original music.

Molly is going to have a new sibling; the Guppies get excited about babies; the children go to the hospital to meet a new baby.

Mail carrier Molly tries to deliver a Friendship Day card for someone named Alison in a place called Wonderland; the card-stealing Queen of Hearts bans Friendship Day across the land.

When Oona's Bubble Kitty goes missing aboard the Guppy Express, Detective Nonny steps in to help.

The Bubble Guppies head to the supermarket to shop for fruits, vegetables and a box of Bubble Bites for Bubble Puppy.