Sonic the Hedgehog: Tribal Trouble

There has been 2 tribes, orders of heroes, who have been fighting for centuries for the possession of the Master Emerald, an object that holds infinite power.

Sonic, Tails, and Knuckles all must go to Earth in order to find the Master Emerald and finally put an end to each of their tribe's useless fighting.

That would be easier if it weren't for a certain human having his own eyes set on the emerald.