Kris Sherwood

Alien werewolves from the Moon attack Earth and steal all the cheese. It's up to Mandy, Grim, Billy, and Sperg to stop the alien ploy.

The Spider Queen wants to take revenge on Grim for denying her the rightful place as the Ripper.

When the Boogey Man causes Grim to lose his powers, rank, and title in the Underworld Court for misusing his powers, he plots to seek out Horror's Hand and take over the world. It's up to Billy, Mandy, Irwin, and Grim to get to Horror's Hand before the Boogey Man does.