Missy and DJ face off against MOZIE the magical Kittycorn in a SING-OFF. If they win they can leave with the princess's royal puppycorn, but if Mozie wins they must stay in her haunted tower forever.
Missy and DJ follow a trail of EASTER EGGS as they head into an ENCHANTED FOREST to get their Bath-Mobile back. They reach RADISH THE BUNNYCORN, who is a big fan of DJ's music.
When Princess Royalle, The Royal Fairycorn Princess arrives at the party, Radish the Bunnycorn admits that Princess Royalle was originally supposed to perform at her birthday party, but her music sounds mopey.
Princess Royalle and Princess Ruby decide to work together to put on DJ's Mythical Musical at Fairycorn Palace. However, they disagree about what type of food should be at the festivities.
DJ is eager to perform in the Mythical Musical, but she's not sure if she's ready for a complex stunt. Princess Ruby coaches her in the Fairycorn Palaces Royal Gymnasium, but DJ keeps worrying about giant food messing up her stunt.
DJ gets PUDDING POP, the star singer from Sparklefest, as a special guest star for the Mythical Musical. However, when she magically DISAPPEARS, Missy and DJ have to find a new actor for their show.
Missy and DJ have been looking forward to the Mythical Musical all day, but when it's DJ's time to shine they find that the ground is covered in Cotton Candy.
Princess Royalle introduces Rufus, Ruby, and the rest of the Rainbocorns to the Mermaidcorns in their home under the sea, Mermaid Cove. However, a big storm has rolled in and the Mermaidcorns are trapped in their lagoon.
Rufus and Meribella decide to take a break from searching for the magic pearls on an old abandoned ship. Soon they realize that they're not alone - there's a school of seahorses surrounding them.
Royalle and Sirena end up venturing into a dark cave where they find an octopus blocking their way. They're going to have to think outside of the box- or sea shell-to get past this slimy situation.
Ruby and Coral are exploring a Kelp forest when they find a group of Merboos who want play Hide and Seek. Little does Ruby know, Merboos are able to camouflage themselves to look like anything.
Royalle and Sirena are on a mission to find the next pearl and meet a whale. But this isn't any ordinary whale - He's King Blue, ruler of the undersea world. King Blue needs their help to talk with his daughter, Princess Beluga.
The search for the remaining pearls continues as Ruby and Coral venture into uncharted waters. Soon they come across a giant clam who is a stand-up comedian. Ruby and Coral help the clam write new jokes and find two missing pearls.
The search for the missing pearls continues when Rufus and Meribella discover that a group of crabs have taken a pearl up to Puppycorn Park. In order to get it back, they'll have to beat the crabs at their own game, The Crab-A-thon.
When Meribella goes to pick up her costume from the underwater-dry-cleaners, she finds that they are closed. Princess Royalle tries to solve her problem with a magic costume spell, but turns Meribella into a Monstercorn.
It's autumn in Rainboville and the leaves are falling, and Meribella is having a hard time letting go of summer. Royalle and Rufus convince Meribella to help them build a giant leaf pile, But they lose Rufus in the pile.
Ruby and Royalle head to Fabulosity Farms to get Sparkle Spice to make the traditional Thanksgiving Sparkle Spice Pie, but they get lost in the farm's Corn Maze and can't find their way out.
It's wintertime in Rainboville, and everyone is out sledding on the snow-covered hills of Sweetheart Street. Ruby is excited to finally be able to use her new toboggan sled, but she discovers that Royalle is afraid of sledding downhill.