Shaggy's uncle mysteriously disappears, leaving behind his latest invention, a mysterious note and $1 billion.

Shaggy and Scooby discover that Dr Phibes is in Switzerland to interrupt a conference on global warming with his new ice melting laser.

Uncle Albert tells Shaggy and Scooby that Phibes plans to kidnap three famous inventors to work on his new super weapon.

Dr Phibes sends a deadly robot into the Shaggleford Mansion to replace their robot butler, Robi, and annihilate the troublesome twosome.

Shaggy and Scooby accidentally release Dr Phibes' deadly computer virus into their mansion.

Dr Phibes attempts to create a world-wide storm that will last forever, leaving Scooby to face his fear of lightning to defeat Phibes and save the world.