Emily is headed to a tropical island for a relaxing vacation with friends and family. And this time, Emily promises her best friend, Shona, there will be absolutely no adventure just plenty of fun. But somehow excitement always seems to find Emily, and before she knows it, she ends up on the other side of a powerful waterfall on a forgotten island no one else can get to.

"When King Neptune uses the last remaining drops of magic mermaid ink to create creatures designed to put NYC underwater, Eric "Doodles" King calls upon his Coney Island friends, aka Monster Club, and his drawing skills to stop Neptune before it's too late"-- Provided by publisher.