Happy Halloween, Scooby-Doo! (2020)

The Mystery Inc. gang are in a covert operation in Elvira’s Halloween of Horrors Parade in Crystal Cove to capture the Haunted Scarecrow. The gang unmasks the Haunted Scarecrow as Dr. Jonathan Crane a.k.a. the Scarecrow, a former escapee convict of Arkham Asylum. While Velma explains how she solved the mystery by tracing a fan mail sent to Elvira by Crane and measuring gas leakage in the air, gas drones carrying fear gas canisters set up by Crane appears in the sky. As everyone starts panicking, Scooby-Doo and Shaggy shoot down the drones by using Halloween candies as projectiles. Before being pulled away by the federal agents, Dr. Crane tells Velma that his drones did not leak, thereby giving a hint that she missed something in her reasoning. Nevertheless, the mystery gang is hailed as heroes by everyone, including the Sheriff for drawing an end to the hauntings.

The gang finds out that the Mystery Machine was severely damaged while chasing Dr. Crane and Fred is visibly upset. Meanwhile, Scooby and Shaggy go to trick or treat as they think the mystery is solved. On the way, they come across a stray disabled drone in a pumpkin patch with “Tot Alli Frame” engraved on it and a truck full of toxic waste. The pumpkins coming in contact with the mixture of toxic waste and Dr. Crane’s fear formula turn to animated monsters. Smaller pumpkins start flying and starts chasing Scooby and Shaggy. They quickly return to town and interrupt an ongoing interview of the other Mystery Inc. gang members to inform them about the ‘Jackal Lanterns’ of the pumpkin patch. Unfortunately, nobody seems to believe them, and they are chided for their actions by Velma.