A picnic cruise gets off to a bad start when the Scooby gang and the Globetrotters accidentally board a ship bound for Haunted Island.

A picnic cruise gets off to a bad start when the Scooby gang and the Globetrotters accidentally board a ship bound for Haunted Island.
On the way to Shaggy’s uncle’s house, the Scooby gang once again runs into the Harlem Globetrotters. Together they face colonial ghosts and a sea serpent.
Scooby and the gang meet the Harlem Globetrotters and tangle with a group of ghost pirates.