While Scooby-Doo is surfing, he encounters a creature in a diving suit. An old sea salt tells the gang that it's the ghost of Captain Cutler who is responsible for the disappearance of many ships.

The gang gets shipwrecked on an island that happens to be an old lair for a pirate. They find a map, but there is a warning telling them to leave the island. The warning appears justified when a ghost called 'The Phantom' is after them.

Thanks to Shaggy's slightly flawed map reading skills, the gang finds themselves in an abandoned western town. The owner tells them that guests were scared off by a strange man who came to the town centuries ago and won't leave until he finds the last remains of his gold claim.

Scooby-Doo witnesses a dog kidnapping at the park. After hearing about it, the gang decides to use Scooby-Doo as bait to capture the kidnappers.

The gang sees a strange man go into a weird mansion. They learn that he is a friend of their Uncle Stewart. Stewart tells them that the ghost of the Kingston Mansion caused him to turn old. Strange things start happening when Sharron and Uncle Stewart vanish.

The gang gets volunteered as workers by Daphne's uncle, a director currently filming a movie about a fierce creature called the ape man. Rumor has it that the real ape man is alive. The gang soon learns that it's not just a rumor.

The gang gets excited about the opening of an amusement park. But when they see the rides on before it opens, they start to get suspicious.

While coming home from getting pizza, Shaggy finds a violin case full of money. While calling the gang Scooby-Doo goes to help an injured poodle and the money is taken. The gang suspects that the money was fake.

The gang rescues two circus people who tell them that they have left a circus because it's bad luck. The ring master tells them of a mysterious person called 'The Ghost Clown' who is responsible for the many strange accidents and incidents in the circus.