The Complete Mini-Series

"The Complete Mini-Series" is the collection of all five episodes of the Sonic Mania Adventures web series. It first aired on the official Sonic the Hedgehog YouTube Channel on 17 July 2018, the same day that the episode "Metal Mayhem" premiered and the same day that Sonic Mania Plus was released in the United States and Europe.

Although promoted as just the five individual episodes strung together in a single video, it actually featured animation touch-ups and additional effects on several sequences from the first four episodes, as well as some minor music differences to accommodate the edits joining some of the episodes together.

Synopsis
The full series, back-to-back! Join Sonic, Tails, Knuckles, Mighty and Ray as they take on the villainous Dr. Eggman, and one of his most powerful creations!

Appearances
Characters:
 * Animals
 * Flicky (multiple)
 * Dr. Eggman
 * Heavy King
 * Knuckles the Echidna
 * Metal Sonic
 * Mighty the Armadillo
 * Miles "Tails" Prower
 * Monkey Dude
 * Ray the Flying Squirrel
 * RhinoBot (x3)
 * Sonic the Hedgehog

Locations:
 * Classic Sonic's world
 * Angel Island

Items:
 * Capsule
 * Chaos Emerald (x7)
 * Chili dog (x4)
 * Master Emerald
 * Ring (x4)
 * Spikes

Vehicles:
 * Egg Mobile
 * Tornado

Plot
Sonic the Hedgehog manages to return to his world following the events of Sonic Forces. Arriving on Angel Island, Sonic notices some strange holes in the ground before seeing Dr. Eggman fly by with a Capsule full of Flickies. After Sonic finds the Capsule and sets the Animals free, he is caught in a trap set by Eggman. Fortunately, Sonic lures Eggman into his own trap as well with a Chaos Emerald and escapes on his own. As Sonic is persuaded by Eggman to free him, however, he learns from Eggman's dropped handheld that the doctor is looking for the Chaos Emeralds and that he already has four of them, with two of the Emeralds still missing. Seeing that Eggman planned to take his Emerald, Sonic leaves Eggman to get blown up by his trap.

Sonic soon reunites with Tails, and together the two of them prevent Eggman from getting another Chaos Emerald. Due to his setbacks, Eggman decides to go after the Master Emerald instead and steals the Tornado, which is waiting on the beach. Meanwhile, somewhere in the woods, Knuckles is protecting the Master Emerald. Suddenly, Ray the Flying Squirrel, who is looking for his friend, Mighty the Armadillo, approaches Knuckles to ask him if he had seen his friend. After a brief misunderstanding, Knuckles chucks Ray away from his location. Immediately after, Knuckles tries to protect the Master Emerald from three Badniks, but while he is doing so, the Master Emerald is sneakily stolen by Eggman, who uses the Tornado to fool Knuckles into believing that Sonic is the thief.

Not long after, Ray comes under attack by Metal Sonic, but is saved at the last possible moment by the sudden appearance of Mighty. Detecting the last missing Chaos Emerald in Mighty's possession, Metal Sonic forces Mighty to give it up in return for Ray's safety. With the last missing Chaos Emerald in its possession, Metal Sonic heads towards Eggman's base on Angel Island. At the same time, Ray spots Sonic and Tails, as well as Knuckles, heading towards the base too, prompting him and Mighty to join the final showdown.

Just as Sonic and Tails arrive inside Eggman's base, Metal Sonic steals their two Chaos Emeralds. Eggman then gives his five Chaos Emeralds to Metal Sonic, which was his plan all along. With the seven Emeralds, Metal Sonic receives a massive power boost, which he uses to overpower Sonic. Fortunately for Sonic, Ray and Mighty arrive, and Mighty saves him. The four heroes then team up to defeat Metal Sonic. In the end, Tails uses his intellect to reject the Chaos Emeralds from Metal Sonic. However, Eggman promptly uses the Master Emerald as a substitute. Before Metal Sonic can power up however, Knuckles arrives and punches both Metal Sonic and Eggman into the distance before taking the Master Emerald with him. With nothing left to do, Sonic, Tails, Mighty and Ray close off their adventure with a picnic.