The Scooby-Doo franchise's legacy is solidified by various series over its 50-year lifespan. Fans react passionately to Velma series, continuing to show the ongoing popularity of Scooby-Doo.

The gang travel to Hawaii to watch a big surfing competition, but when a man warns them that there are evil spirits on the island, and that one of them is angry, it's time to help.