Sonic's Adventures of Willy Wonka & the Chocolate Factory is another upcoming Sonic the Hedgehog crossover planned to be made by Toonwriter. It will appear on Google Drive in the near future.
In an unnamed European town, children go to a candy shop after school. Sonic and his friends- Tails, Knuckles, Amy, Cream, Cheese and Cosmo- headed to the candy shop as well, along with Kirby, Tiff, Tuff, the Kids Next Door and the Powerpuff Girls. As they enjoyed their snacks, they met Charlie Bucket, whose family is poor, who can only stare through the window as the shop owner sings "Candy Man". The newsagent for whom Charlie works after school gives him his weekly pay, which Charlie uses to buy a loaf of bread. On his way home with his newfound friends, he passes Willy Wonka's chocolate factory. A mysterious tinker recites the first lines of William Allingham's poem "The Fairies", and tells Charlie, Sonic and the gang, "Nobody ever goes in, and nobody ever comes out." Charlie and Sonic's group rush home to his widowed mother and his four bedridden grandparents. After Charlie tells Grandpa Joe about the tinker, Joe tells them that Wonka locked the factory because his arch-rival, Arthur Slugworth, and other candy makers sent in spies disguised as employees to steal Wonka's recipes. Wonka disappeared, but three years later began selling more candy; the origin of Wonka's labor force is a mystery.
Wonka announces to the world that he has hidden five "Golden Tickets" in his chocolate Wonka Bars. The finders of these tickets will be given a tour of his factory and a lifetime supply of chocolate. Four of the tickets are found by Augustus Gloop, a gluttonous German boy; Veruca Salt, a spoiled British girl; Violet Beauregarde, a gum-chewing American girl; and Mike Teavee, a television-obsessed American boy. As each winner is heralded to the world on television, a sinister-looking man whispers to them. Then, the fifth ticket is found by a millionaire in Paraguay, South America, much to the dismay of Charlie, his family and Sonic and the gang.
The next day, Charlie finds money in a gutter and uses it to buy a Wonka Bar. He has change left that he uses to buy another Wonka bar that he intends to bring to his family. At that time, the newspapers reveal that the Paraguayan millionaire had forged a ticket, and when Charlie opens the Wonka bar, to his and Sonic and gang's delight, he finds the real fifth golden ticket. Racing home, they are confronted by the sinister man seen whispering to the other winners. The man introduces himself as Slugworth and offers to pay Charlie for a sample of Wonka's latest creation, the Everlasting Gobstopper.
Charlie and his friends returns home with his news. Grandpa Joe is so elated that he finds he can walk, and Charlie chooses him as his chaperone. The next day, Sonic and the gang meet some new friends who are also in on the event. As it happens, Wonka greets the ticket winners and Sonic and friends at the factory gates. Each is required to sign an extensive contract before they may begin the tour. The factory is a psychedelic wonderland that includes a river of chocolate, edible mushrooms, lickable wallpaper, and other marvelous inventions. Wonka's workers are beings known as Oompa-Loompas.
During the tour, Augustus falls into the Chocolate River and is sucked up a pipe to the Fudge Room. Violet blows up into a blueberry after chewing an experimental three-course meal gum, against Wonka's warnings. The group reaches the Fizzy Lifting Drinks Room, where Charlie, Grandpa Joe and Sonic and the gang disregard Wonka's warning and sample the drinks on purpose, only to break the rules and get in trouble. They are not caught in the act, but have a near-fatal encounter with an exhaust fan. Veruca demands a goose that lays golden chocolate eggs, which leads her to falling down the garbage chute leading to the furnace (her father shortly falls in trying to rescue her). Mike then succumbs to the lure of "Wonkavision", which teleports Mike but leaves him only six inches tall.
In between Augustus' and Violet's demises, Wonka gave the remaining ticket winners an Everlasting Gobstopper on the condition that they never talk about or show them to anyone. At the end of the tour, Wonka, Charlie, Grandpa Joe and Sonic and the gang remain, but Wonka dismisses them, without awarding them the promised lifetime supply of chocolate. Grandpa Joe follows Wonka to ask him about this, and Wonka angrily tells him that because they violated the contract by stealing Fizzy Lifting Drinks, they receive nothing. Seeking revenge, Grandpa Joe suggests to Charlie that he give Slugworth the Gobstopper, but Charlie instead returns the candy to Wonka and apologizes.
Wonka immediately changes his tone, and to the surprise of Sonic and the gang, declares Charlie the winner. He reveals that "Slugworth" is actually an employee named Mr. Wilkinson, and the offer to buy the Gobstopper, as well as Wonka's rant, was a test; Charlie was the only one who passed. The group enters the "Wonkavator", a multi-directional glass elevator that flies out of the factory. Soaring over the city, Wonka tells Charlie that his actual prize is the factory itself; Wonka created the contest to find a child honest and worthy enough to be his heir. Charlie and his family will move into the factory immediately and take over its operation when Wonka retires.
- Numbuh 1, Numbuh 2, Numbuh 3, Numbuh 4, Numbuh 5, Blossom, Bubbles, Buttercup, Phoenix Wright, Maya Fey, Apollo Justice, Athena Cykes, Mickey Mouse, Minnie Mouse, Donald Duck, Daisy Duck, Goofy, Scrooge McDuck, Huey, Dewey, Louie, Webby Vanderquack, Launchpad McQuack, Emily, Kelsey, Lily, April, Chloe, Candy, Pop, Kirby, Tiff and Tuff guest star in this film.
- Apollo Justice would be be revealed to be working for Veruca Salt as his lawyer at first, until her comeuppance later in the film.
- There was a Sonic's Adventures of Willy Wonka and the Chocolate Factory before, but it was deleted, so Toonwriter decided to do one as a remake and dedication.
- This film will be dedicated to Gene Wilder (1933-2016).