One of Velma's experiments is picked to be launched into space, but an astronaut ghost terrorizing the place thinks otherwise.

Scooby decides to go visit his family, though he soon discovers that they are all concerned with a curse that was supposedly placed on their family. The Scooby-Doo Detective Agency decides to investigate the curse in order to prove to the family that they have nothing to be concerned with, though they soon discover that there actually does seem to be a beast in their midst.

The Scooby-Doo Detective Agency helps out a Monster Catching agency in danger of going out of business when a giant snail is terrorizing everyone.