He might have just been a pup when he left Krypton, but Krypto the Superdog is all grown up and ready to protect his new family and his new home, Earth.
When Scooby-Doo and his friends visit Phantom Gulch, a Wild West theme park, they discover it is closing because the staff and customers are being chased out of town by a spooky cowboy riding a haunted buffalo.