Scooby-Doo and the Island Cats

This Idea takes place, after Scooby-Doo Return to Zombie Island.

Premise
While on Moonscar Island, Scooby-Doo has an adventure with the Cats there, and also learn about the Island Cats' origins, unaware of an evil plot at work...

Synopsis
On a visit to New Orleans, Mystery Inc has just busted a criminal smuggling printing plates in giant masks. As the police took the criminal to jail, The gang saw a sign saying, "Island Property for sale. Residential/Commercial only." Learning that the property is Moonscar Island, the rest of Mystery Inc. go there, via a boat, for nostalgic reasons. Once there, they see a group of workers running away hopping the boat for the mainland, due to roaring being. On the way to Moonscar Mansion, they encounter three potential buyers, composed of Joseph, a quirky artist, Edwin, a florist from the mainland, and Melissa, an animal activist.

Noticing that there are no cats to be seen, the gang go inside Moonscar Mansion, and spot six cats there. Shaggy accidentally broke a floorboard, and under it, they find a few notebooks, one in particular, is the history of cats, from Ancient Greece to the 21st century. The gang read the details, as Scooby wonders about the unusual writing. At nighttime, Scooby-Doo is looking up at the night sky, wandering the island, unknowingly followed by a few cats. After Scooby noticed that the cats were following Him, He goes faster, Then, while running to get away from the cats, He accidentally bumps into two silhouetted figures wearing Black cloaks, who were putting some cats in cages as one enters the cave. The two figures fled after being spotted, as Scooby cautiously freed the caged cats, including the beige kitten who startled Him in the previous incident, thinking that He’d be attacked. But the cats purred around the bewildered Great Dane.

Returning to the mansion with the cats, the Six cats come down, and a gray one approaches Scooby and softly scratches His name Zanadu, on the broken floorboard, and places his paw on Scooby's arm, then, they run off. Then, as the gang was asleep, Scooby dreamed that He and a group of cats are running from a mob of hunters, but escaped with their lives. After waking up, Scooby, knowing that the two figures would come back, tells the others about the cloaked beings. At morning, as the gang checked the Entire island for clues, as another potential buyer, and farm mogul, Mr. P. L. Atinum arrives at the island, looking to turn the island into a place for gardeners to live and work.

As Scooby watched what’s going on, He and Shaggy hear a scratching sound and they see a brown cat there, and on the floorboard was the word, “Bunna”. Who is Zanadu’s mate, places Her paw on Scooby’s paw, then as Bunna was about to leave, Zanadu nuzzles Bunna and they both sleep. Leaving Scooby and Shaggy confused.

While Mystery Inc. continue checking for clues, they without being seen, see Joseph placing collars on the cats as Melissa takes pictures of the felines. thinking the two are up to something, The gang go to check as a blue cat climbs on Scooby’s back. At a beach, the blue cat gets off and uses Her claws to write “Azrak” on the sand then runs off. The gang recognizes it as the blue cat’s name, as a group of straycatchers arrive, coming to capture any stray cats in the area. Melissa tells the stray catchers to leave since visiting the island is only for potential buyers.

Eventually, one of the cloaked beings capture Scooby, and try to take Him away, but one cat attacked the being, causing Him to trip into a sinkhole. The being calls for help, as Azrak helped free Scooby. the cloaked being called for the other to help Him get out seconds before the developers arrived. Later, at night, Scooby sees an animal shelter worker exploring and search for any cats hiding in the island. Scooby then goes to the mansion, and quietly sees the cats hiding inside. Then, an Orange cat named Tuqaliu, who is Azrak's mate, places His paw on Scooby, and tells Him that while hiding, they look at the idol, after a few seconds, a strange power goes into the six cats who were given immortality and telepathy. with that the six cats decided to make it a mission to end the were-cat era as they prepare for the future.

Soon, one cloaked being infiltrated the mansion as violet fog goes inside and quietly captures the cats one by one. Scooby sneaks off to warn the gang about the catnapper. However, the fog causes Him to fall asleep, as well. Hours later, morning came, with Scooby waking up to find the place empty. meaning Shaggy and the others along with almost all of the cats are gone! Scooby then spots the catnappers going on a raft, with the captives forced to board. Fortunately, the cat creature attacks the catnappers, But, is caught in a cage as the catnappers take the cat idol as well, to be auctioned off.

The rest of Mystery Inc. is captured by a few of the catnappers' henchmen and they leave the island undetected. In despair, Scooby wanders the island and encounters the six aging cats (Who were hiding in the forest) and explained to them that Mystery Inc and the rest of the cats were captured along with the cat idol. The cats after hearing this, after learning this, try to find a way to bring the idol back, and they use a big wood board as a makeshift boat. Scooby along with the six aging cats row to the mainland.

As night was nearing, Scooby and the Cats reach the mainland, the black cat named Aswad places His paw on Scooby. One year, after the settlers became were-cats, The Six Cats with their kittens were told telepathically by the idol, that as long as they were within the range of the idol, The six cats would keep their immortality, and they decide to wait for a cat not from the island to warn people of the Were-Cats as they kept watch as the kittens, once old enough, could leave the island in hopes of getting help. but, with only humans coming to the island, the Cats had no luck, as the six cats for over 200 years waited, as they continued to have kittens, hoping that They would bring someone to defeat the Were-Cats. the illusion ended after that as Scooby and the cats search for the catnappers' whereabouts.

Meanwhile, While imprisoned in the black cloaked beings' hideout, Mystery Inc. sees one catnapper take 16 cages, each one containing a cat, to an empty van, as a person in a trench jacket, gives money to the catnappers. Soon, Scooby and the six cats who are now elderly, bust in and free the hostages, along with the cat creature, after being freed, chase the culprits, scaring them into the hands of the police, who arrest them and the buyer as the Cat Creature takes the six cats back to the island.

The culprits as it turned out were the two of the Animal Shelter workers, who are in fact, Erwin and Edwin, whom Mr. Atinum recognized as workers He fired two years ago, because the two had falsified records, just to get a job. Erwin and Edwin, seeking revenge, became Co-leaders of a cat trafficking group, known for smuggling cats from all over the world, selling rare-breed ones to the highest bidder, and planting the other cats in businesses, so that the Health Department would shut down the businesses. With the criminals arrested, Scooby and the gang offer to take the kidnapped cats and the idol back to Moonscar Island, on the ferry which they all board.

After arriving back, the gang put the idol back to its pedestal, with that, the six cats regained their youth, as a white cat named Abyad, Aswad's Mate, placed Her paw on Scooby, at the time of right before Mystery Inc. arrived, Two Cats, (Both Lykoi) arrived, a couple days later, After learning that the Lykoi Cats' owners were drained of their life force, the male Lykoi, whose rage triggered the idol to give the cat a humanoid form, to get His revenge on the Were-Cats, but was no match and was forced to retreat. the illusion ended, as the Cat Creature went to the shrine and after a few seconds, He returned to being a normal Lykoi-breed cat named Dhiib, who learned from the other cats, that His owners' deathes were avenged, thanks to Scooby and His friends, then the sick cat from earlier tended to an unconscious Dhiib.

Mr. Atinum, realizing that the island is best left to the cats, decided to leave the island as is. as the Gang was ready to head for home, the six cats put their paws on Scooby, and He sees a vision of the future, where cats and dogs are living together in peace, making Scooby going “Scooby-Dooby-Doo!” As the cats meow in victory.

Trivia
The Six Cats seen in the Cavern at the end and the beige kitten seen in "Scooby Doo: Return to Zombie Island" get a bigger role.