Feature-length animated adventure following Scooby-Doo (voice of Frank Welker) and the gang as they investigate another mystery. When Fred (Welker)'s uncle, celebrity chef Bobby Flay (himself), invites the gang to stay at the Rocky Harbor Culinary Resort, Shaggy (Matthew Lillard), Daphne (Grey Griffin), Velma (Kate Micucci), Fred and Scooby find themselves investigating another paranormal mystery when the legendary Red Ghost returns to haunt the inn and sabotage the grand opening of its new restaurant. With help from Bobby and his fellow world-famous chef Giada De Laurentiis (herself), will the Mystery Inc. gang solve the mystery of the Red Ghost?