Draculaura, Clawdeen and Frankie meet Twyla, a boogey monster, while having a sleepover in the library.

Lagoona's creative vision is ignored by other monsters as they make a movie for the Film Festival.

Twyla must complete a rite of passage by pursuing a Night Terror through her friends' dreams.

Clawdeen leads the monster representatives in the Blood Moon Eclipse ceremony to bring her mom back. It's up to her, Draculaura, Frankie and the rest of the boo crew to save the Monster Ball - and the world.