In the year of early 1980s, In the foggy town of Crystal Cove, a series of mysterious attacks terrorizes locals, all blamed on the legendary Creeper. When the Mystery Gang: Fred, Daphne, Velma, Shaggy, and talking dog Scooby arrive, they uncover hidden secrets, unmask long-buried rivalries, and face their scariest case yet. Can they solve the mystery before the Creeper claims his next victim?