Sonic the Hedgehog attempts to destroy the base of Doctor Eggman and retrieve 7 Chaos Emeralds. One of Eggman's robots inadvertently shoots a machine containing the Emeralds, which activates the "Chaos Control" technique. This teleports Sonic, Eggman, Tails, and friends to Earth, the parallel-universe version of their world. Sonic is chased by police, escapes into a mansion's swimming pool, and is rescued by a 12-year-old boy named Chris Thorndyke, who lives there with his movie-star mother Lindsey, father Nelson, grandfather Chuck, maid Ella, and butler Tanaka. Chris tries to hide the animals from his family until Cream accidentally reveals them.