Sonic is on a journey to collect crystals for a high-powered lazer beam constructed by his kingdom Rotopolis to destroy the evil empire of the aztorians and their emperor Aztor. This is because when Sonic was a child his brother was mysteriously killed traveling to an unknown planet to see what it was like. He finally found out about this and had a feeling it was the aztorians. Have fun and read each description of all the levels carefully.