Sonic & The Seven Rings- Plot notes and sequences.

This game takes place directly after Sonic 3 and Knuckles, the last proper
Sonic game for the Megadrive. While Sonic was off fighting the Egg-Robo
that Eggman disguised as himself in the Death Egg, Eggman was busy
colonising Earth. He's built up a small army of robots, and is using them to guard his 
latest evil creation, Project Mettrix.

By stealing plans from the ancient vaults of the Hidden Palace, Dr. Eggman has created a device 
that could transform every animal on the planet into robots, only retaining their brain patterns,
leaving him with intelligent robots, rather than the mindless drones of before.
However, this machine would have to create a forcefield over the globe to change the animals, and
that would be impossible with the physics of this universe. So to counter this, Eggman is 
using the dimensional rifts created by the giant power rings to store the main bulk of the 
machine in the alternate reality known only as the Special Stage. He's taken 7 of the giant 
rings, and created a power source that could power his insane plots, situated half on the 
Floating Island, half in the Special Stage. A solar eclipse is approaching, and Eggman will be 
able to focus the intense beam of light to power his machine. If you don't reach him before them,
he'll create an army of robots so powerful, all of the human population would be forced to do 
his bidding, and your animal friends would be trapped forever!

When Sonic and Tails take their plane back to their home in the Green Hill Zone, they're shot 
down by an Egg-Robo, and Sonic falls down into the ocean.
Pulling himself out onto a nearby island, he shakes the water out of his spikes.
"No-one messes with this hedgehog..." and with that he races off to find Dr. Eggman.