During their final summer at camp, old friends Shaggy and Daphne get embroiled in a haunting mystery surrounding a lonely lost Great Dane puppy that may have been a witness to a supernatural murder. Together with the pragmatic and scientific townie, Velma, and the strange, but ever so handsome new kid, Freddy, they set out to solve the case that is pulling each of them into a creepy nightmare that threatens to expose all of their secrets.