Revenge of the Man-Crab is the fourth episode in Scooby Doo Mystery Incorporated.
The gang arrive at the Crystal Cove Beach. Shaggy and Scooby-Doo are hungry and go to the Clam Cabin. The owner Skipper Shelton is mad about the town moving his store for the volleyball tournament. Velma purposly asks Shelton about his lost nose, angering him. They spot a man named Bud Shelton selling water.
Sheriff Bronson Stone arrives and won't close the beaches so the gang will get the Man-Crab themselves. Fred sets a trap and lets Shaggy and Scooby-Doo watch for the monster. Shaggy gets hungry. Velma visits Daphne who is chased by the Man-Crab. Hunting for a snack, Shaggy is caught in the trap and the monster takes Daphne.
The gang visit Angel and then the Crystal Cove Library. Here they learn about Bud Shelton and the Original Mystery Incorporated. Mr. E sends them a message to go to the Crystal Cove Caves where the original team disappeared.
The gang investigate the caves and find an enormous wooden stairwell. They all find the cage with Daphne, Dylan, Brenda, the volleyball girl and a seagull. Everyone is chased back to the beach where the Man-Crab is caught in the trap. The monster was unmasked to be Bud Shelton who wanted revenge on Peter Trickell for stealing his idea to make a new type of water.
- Near the start, teenage versions of Pebbles Flintstone and Bam Bam Rubble from the Flintstones are seen.
- Daphne has a seafood allegy.
- Bud Shelton and Skipper Shelton weren't went to have the same surname. It was a mistake. His real name was possilby Bud Coleman.
* Shaggy: It's a mab...a cran...
Scooby: It's a Man-Crab!