Scoob! (Alternate extended version)

This version of the film Scoob! features content that was cut from the film due to time. Added content, cast and characters and extended run time. It's rune time is 122 minutes.

Promise
Mystery Inc. rally other heroes to prevent a dogpocalypse from being unleashed, which will bring about the release of the ghost of Cerberus, and a secret history behind Mystery Inc.'s mascot, Scooby-Doo. Meanwhile, supervillain Dick Dastardly attempts to steal treasure from the Underworld.

Synopsis
At Venice Beach, California, an unmanned, stray puppy is wandering the streets looking for food. He comes across a restaurant, Alexander's Great Gyros, and sees a giant piece of meat hanging in the window. Seeing as how the meat was unclaimed, the puppy thinks nothing of picking it up and stealing it.

The shop owner calls out as his meat is being stolen and a cop starts pursuing the puppy. In the midst of the pursuit, the puppy bumps into a young boy, Shaggy, who is walking by himself to the beach. However, the puppy keeps on running away from the cop, paying little regard to Shaggy.

Shaggy plugs in earbuds and begins listening to music on his phone. The song he is listening to is about loneliness, so he changes the music station. The next song is also about loneliness, so he changes the music station again. This continues on for a few songs until he gives up and begins listening to a podcast, only to find out that it is about loneliness.

After a long chase, the puppy eventually escapes the cop by hiding behind two mounds of sand. Shaggy then comes up to the mounds of sand, unaware of the puppy's presence, and sets up a picnic, pretending that the mounds of sand were his friends.

The puppy starts to feel empathetic towards Shaggy and comes out from behind the sand, offering to eat with Shaggy. When Shaggy explains that while he has a sandwich to share but that it doesn't contain any meat, the puppy brings out the stolen piece of gyro meat and cuts slices for the sandwich.

The cop finally finds Shaggy and the puppy and insists that "this mangy stray is coming with me." Shaggy refuses and claims that the puppy is his dog and that his name is Snacks. When the cop doesn't believe the name, Shaggy corrects himself and says that his name is Scooby-Dooby-Doo. The cop then lets them be, as the law is that dogs with middle names can't be arrested. Shaggy tells the puppy, now named Scooby, that he can be his dog if he liked. Scooby agrees and they head home to Shaggy's house.

Once at home, Shaggy shows Scooby his room, which is filled with memorabilia of Blue Falcon and Dynomutt, Shaggy's favorite superheroes. Shaggy then gives Scooby a gift, a custom collar for him, which Scooby swears to never take off.

On Halloween night, Shaggy and Scooby, dressed up as Blue Falcon and Dynomutt, go trick-or-treating. They come to the Rigby House, a mansion that Shaggy claims is haunted. They begin to walk away when two bullies steal their bag of candy and throw it into the Rigby House. After the bullies run away, Shaggy and Scooby meet Fred, Daphne, and Velma, a group of friends, who want to make sure they're okay after being picked on. They offer to go into the house and try to get their candy back.

When they walk into the house they are attacked by a ghost who chases them around. During the commotion, Velma notices that the ghost is attached to a moving wire system in the ceiling. Fred cuts the wire with an ax that was hanging on the wall and the ghost falls down, only to be tied up by Daphne and Velma, and attacked by Fred.

Upon looking more carefully at the ghost they discover that he isn't a ghost and is actually Mr. Rigby, wearing a mask. Shaggy and Scooby discover a secret hidden room, filled to the brim with expensive, stolen electronics. The police arrive and take away Mr. Rigby. The five friends, happy with their success in stopping a crime decide to pursue mystery solving.

A montage ensues in which the gang solves a variety of cases and takedown classic monsters from Where Are You. Throughout the montage, they transition into adults.

Fast forward to years later and in Machu Picchu, Peru two archeologists Dr. Fitzhugh and Sandra found a giant-sized dog skull which is belonged to Cerberus, the guardian of the Underworld. Fitzhugh showed Sandra murals that explains skulls were separated and hidden across the world in three mythical places and legend has it that should the skulls ever to be reunited, the Gates of Hade would rise again and plunge the world to darkness.

Sandra was confused of why would any one want that happen. Fitzhugh tells her that behind the gates is enormous treasure horde which would make him the wealthiest man in history and pulls a weapon from is sleeve then points it at Sandra. Dr. Fitzhugh unmasks himself as Dick Dastardly and Sandra presses the alarm button but the alarms were already disabled by Dastardly's henchwoman, Pandora Pitstop. Dick shoots a sticky substance at Sandra and sticks her to the wall.

Sandra tells him the skulls are useless without the key. However Dick asures her that the pr

Few months later in Venice

Characters
Main Characters: Supporting Characters: Villains:
 * Mystery Inc
 * Scooby-Doo
 * Shaggy Rogers
 * Daphne Blake
 * Fred Jones
 * Velma Dinkley
 * Blue Falcon
 * Dynomutt, Dog Wonder
 * Teen Angels
 * Dee Dee Skyes
 * Taffy Dare
 * Brenda Chance
 * Speed Bugs
 * Speed Buggy
 * Tinker
 * Mark
 * Debbie
 * Neptunes
 * Jabberjaw
 * Clamhead
 * Biff
 * Shelly
 * Bubbles
 * Captain Caveman
 * Grape Ape
 * Penelope Pitstop
 * Dick Dastardly
 * Muttley
 * Pandora Pitstop
 * Blast Off Buzzard
 * Rotten Robots
 * Dusty
 * Dastardly Droids: Replacements for the Rottens after they've failed to capture Scooby Doo for the third last time.
 * Cerberus