Emily Windsnap is thrilled to arrive at her new home - a secret island near the Bermuda Triangle where humans and merfolk live together, and where being a girl who grows a tail as soon as she enters the water isn't a problem. But, being Emily, she can't resist exploring forbidden places, and, as a result, she inadvertently wakes the kraken - the legendary sea monster that has been asleep for two hundred years! Emily tries to undo the damage as the kraken's terrifying tentacles rise from the deep!