When a spooky yeti attacks the ice rink with a freeze ray, the Dynamic Duo and the Mystery Inc. gang team up to unmask the frozen fiend before all of Gotham City gets put on ice.

When an uncharted island springs up in Gotham City Harbor, Batman and Mystery Inc. join forces to uncover who created the tropical paradise. Before long, they find themselves under attack by a host of vile vegetation and prehistoric plants. Can the Dark Knight help Scooby and the gang escape from this mysterious island before they become a feast for the ferocious foliage?