It has been four years since the Battle of the Ark. The Forward Unto Dawn crash lands onto a unknown world and onboard the Dawn. The SPARTAN John-117 better known as Master Chief awakens from his sleep. He soon finds himself on a strange new world with only his old AI partner Cortana by his side. However he will soon discover that it was not chance that brought him here. But fate.

Sonic is brought to Middle Earth due to an unexpected complication of Chaos Control during a fight with Eggman. As he journeys through Middle Earth, he will see many things he hasn't seen before, and many he wishes he had never seen. Will Sonic and his friends be able to help the Fellowship destroy the One Ring? Some Sonaze hintings in Chapter 1, other pairings likely later.