This story is set on West Side Island. During his travels, Sonic the Hedgehog discovers West Side Island and sets up camp there while unknowingly being followed by Doctor Eggman. He eventually meets a shy, two-tailed fox named Miles "Tails" Prower, who idolizes him and follows him around the island. As it turns out, Eggman settled on the island to find the Chaos Emeralds to power his space fortress known as the Death Egg. Sonic immediately rushes to thwart his plans, with Tails following him.