Olivia and Natasha Visit Mermaidsburg

Olivia and Natasha are two sisters who happen to be the youngest explorers in the world. One night when both the girls are having trouble falling asleep, a fairy comes to visit and takes them to the ocean where they meet all the wonderful sea creatures and mermaids who live in Mermaidsberg. There, they help the mermaids solve a problem and save all the creature of the sea.