While preparing for a unit on storytelling, the mermaids of Trident Academy learn of a legendary pirate treasure in their own city and Pearl decides to find it, despite a warning that it is guarded by a ghost.

The Bailey School kids believe that the new pizza place, with its medieval theme and a man dressed as a knight, has a fire-breathing dragon as its cook.

When a group of short construction workers begins building a school playground, Lisa begins to suspect that they are really Christmas elves.

Eddie and his friends are having a blast at the spring carnival. But a tiny woman who sells t-shirts is scaring some of them away--she's got bright red hair, pointy ears, a squeaky voice, and yells at the kids--just like a mean troll.

The third grade at Bailey Elementary was very hard to handle, until a strange new teacher named Mrs. Jeepers arrived.

A shark has been spotted in Trident City! Pearl Swamp is so scared, she needs a shark Guard to escort her to and from school. She doesn't trust anyone who likes these terrifying creatures, especially Kiki Coral, who isn't nearly as frightened as Pearl. And to make matters worse, Pearl accuses Kiki of stealing her precious pearl necklace! Will the sharks destroy the peace of their sparking city? Or will the mergirls have to swim in dangerous deep-sea...

The Bailey School kids investigate to see if a mad scientist can turn a snow sculpture into a real dragon.