Very hard to find - "Fire the Mystery Planes hamburger flick missiles and swing down to reclaim the stolen golden cup and unmask The Headless Horseman.
Drop hamburgers on the Headless Horseman and reveal his true identity!
Chase the Headless Horseman with Shaggy and Scooby-Doo and reclaim the stolen golden cup! Search for clues and take off in the plane but does Shaggy even know how to fly a plane? Too late to worry about that now! Leave Scooby sitting in the cockpit and swing down on the chain with Shaggy to try and grab the precious cup. Fire the hamburger flick missiles to knock the Headless Horseman off his horse. Then rip off the pumpkin-head disguise to reveal the villains true identity! Includes 2 minifigures with a weapon and assorted accessory elements: Shaggy, Headless Horseman/Elwood Crane, plus Scooby-Doo (sitting version)."
credit given to toywiz for item description. -- 6-10-18