Happy Halloween, Scooby-Doo! (2020) on Netflix

Plot summary

The Mystery Inc. gang's covert operation at Elvira's Halloween of Horrors Parade in Crystal Cove targets the Haunted Scarecrow. When gas drones carrying fear gas canisters fill the sky, Scooby-Doo and Shaggy bring them down with Halloween candy, and the crowd hails the gang as heroes. The chase has wrecked the Mystery Machine, which upsets Fred. Scooby and Shaggy go trick-or-treating, then find a broken drone in a pumpkin patch beside a truck of toxic waste; pumpkins touched by the mixture turn into animated monsters. No one in town believes the pair. Bill Nye hands Fred and Velma a modernized replacement vehicle, the Mystery Machine X.