The fifth and final pearl is the only thing that stands between the mermaid Princess Mira and her ability to lift the curse from her kingdom. Scarred from terrible encounters with sea creatures who want to steal the other four, she bravely searches for the Green Fairy, who guards the green pearl. Together with her friends Clyde the merman and Olena the octopus, Mira meets treachery and danger, and the three must work together to save the pearls and themselves.

But lost in the ocean, with no idea where home lies, they find exhaustion is a greater hardship than either the ocean or its creatures. Will they lose hope, when they are so near the end of their quest?

This final story in Mira's quest for the pearls will soon become a favorite of young readers.