When the Justice League goes missing and villains overrun Metropolis, there's only one team that can solve this mystery: Scooby-Doo and the gang! But wait, there's a new dog in town – Krypto – Superman's Superdog with Super Powers. Mystery Inc. will need all the help it can get when phantoms menace the Justice League's headquarters.

The Cusp is a serial killer who kills his victims and then brings them back to life; over and over again; until they beg to die! Maya is a psychic investigator who gained her powers after a 1 year coma after she was the Cusp's first victim! Now the Cusp Killer is back and Maya has little time to do what she has never done before: go into the mind of a killer unprotected and save his latest victim.

Three mischievous children embark on a woodland odyssey when their mother sends them on an errand.