It's another amazing day in the spooktacular town of Monsterland! Rags the little mummy and his bestie dragon Tickles are on a sleuthing mission: they're looking for the yummies Halloween treats in the world. Candy corn witch finger and. coconut eyeballs make the list, but are they the best ever? Everybody's favorite teacher, professor Dracula has a clue: the best treat in the world is having a great time with those you love, no matter what!

Help Blue figure out Magenta's Halloween costume. Blaze and AJ are excited to 'truck or treat,' but Crusher tries to steal their candy! Then, it's time to give thanks as Josh plays Blue's Clues to discover what Blue is thankful for. Marshall and Chase and the pups rescue Mayor Humdinger and his kittens from a bouncy Thanksgiving turkey! And The Bean Team shows Ms. Marmalady what Thanksgiving is all about.

It's a well-known fact that Halloween is Scooby's and Shaggy's favorite holiday. But this year, their sweet holiday turns sour when the Spookiest monster they've ever met starts knocking on doors and scaring everybody out of town! Now it's up to Scooby and his pals to solve the mystery of this terrifying trick-or-treat and save the day!