Ernest is excited for jack-o'lanterns, costumes and trick or treating. Edith and Bo want to stay in. Arthur provides Ernest with the "perfect" costume.
A giant, energy eating bird is draining the Gruselbrook power plants. The Van Altens take to the skies to engage this beautiful but dangerous creature.
Flying back from Austria, Arthur's monster hunter plane gets infested by three destructive gremlins. And there's only one effective course of action against that.
Battling a powerful manticore Arthur bestows Ernest with a medallion that will make him invincible. Ernest quickly develops a bad case of self-confidence.
With help from their formerly frozen sorceress grandmother, the kids look for a way to break the unbreakable werewolf curse. But can grandma be trusted?
The whole family is gathered for Christmas. To make matters worse, three intergalactic Christmas demons known as "The Three Wise Men" decide to drop by.
The former werewolf, known as Wolfcheski, has some trouble managing his temper. The monster experts decide it's time for "Werewolf anger management therapy".
In an attempt to avoid physical monster interaction, the kids embark on a monster photo safari. But two newborn glarbergastling babies complicate the adventure.
In a quest for unimaginable pampering, Phil joins forces with an ancient Mummy, who's determined to destroy Gruselbrook. Phil gets more than he bargained for.
To avoid doing homework, the kids must engage in a desperate battle with Mrs. Jorgensen, a super poltergeist who used to be Arthur's grade school teacher.
For one day of the year, all monster hunters must host and pamper the terrifying, fashion obsessed Icelandic Yulecat. But where hospitality ends, rebellion begins.
