When giant robot Buster steals all the batteries that power Solar City, which runs on the sun's energy, it's up to solar power workers Nonny and Goby to stop him and get the lights back on before the big light show is cancelled.
Dirty Deema steals Molly and Gil's soap and makes the Kingdom of Clean very dirty; Molly and Gil have to get their soap back and clean up the kingdom.
When some untidy Titans (played by Guppies) start messing up Zooli, Nonny and Oona's goat farm, the goat herders must journey to the Titans' cloud realm to ask them to tidy up.
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.
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.
The children try to teach Mr. Grumpfish about their favorite things when he is their substitute teacher.
The Guppies must use their nautical knowledge to save their party at sea when a giant ball of snow cone ice threatens to sink the party ship.
The Guppies learn about the zoo while trying to find a friend for a lonely rhinoceros.
Deema has a loose tooth; the Guppies learn about keeping a healthy smile.
The Bubble Guppies learn about construction while building a doghouse for Bubble Puppy.
The Bubble Guppies must deal with a difficult customer at their restaurant.
When an actor cannot perform at a play, Deema must take the stage.