Two children set out to capture a mermaid, but she manages to escape all of their traps.

When Splash the merminnie's flashy tricks get him in trouble, it's up to Pinkalicious and her friends to save him.

During her family vacation on a floating palace, Sofia befriends a mermaid, and through their friendship helps save the mermaid's kingdom.

Oona and her best friend Otto love to search for treasure...and often find trouble instead. Messy trouble. Tricky trouble. Even shark-related trouble. That's never stopped them before, though! After all, no proper treasure hunt is without some adventure. But when the grandest treasure yet is stuck in a deep, dark rift, Oona's not sure if she can dive right in. What might be waiting for her in those unknown waters?

Izzy joins Marina and the other mermaids at Hidden Cove for the Treasure of the Tides ceremony. But that sneaky snook Captain Hook has his eye on the mermaids' treasure! Can Izzy and the mermaids outwit Hook and keep the treasure safe?