Scooby-Doo

The mystery gang is investigating a house where things keep going missing and they're trying to find out what's causing this, they encounter a monster named Malicious who wears a white mask with a smile and wears a red dress with black leggings and red and black boots and white gloves and a red and black jester hat the mystery gang try to avoid her as Malicious is trying to spoil their plans on solving the mystery they're also trying to figure out who Malicious meanwhile the other characters from Happy Tree Friends, Experiments, Carl The Collector, Arthur, South Park, The PowerPuff Girls, WordGirl, Hamster and Gretel, Popeye, Paw Patrol, Team Umizoomi, Tom and Jerry are there to help the Scooby gang