hen Brainy Smurf is favored to win the annual Smurfberry Hunt for the ninth year in a row, Gutsy Smurf sets out to discover how Brainy wins every year. Gutsy’s investigation takes him into spooky Smurfy Hollow–and right into Gargamel’s trap! Can Brainy and Gutsy, with the help of Smurfette, put aside their rivalry before Gargamel captures them–or worse, they come face-to-face with the legendary ghost, the Headless Horseman?

Overview from themoviedb.org