Following a failed attempt by Sonic to defeat Dr. Eggman in space, Eggman shatters the world with the power of the Chaos Emeralds, unleashing two earthbound entities known as Light and Dark Gaia and infusing Sonic with a state called 'the Werehog' at night. Now Sonic must navigate various continents while accompanied by Light Gaia, nicknamed "Chip", to restore the Chaos Emeralds' power and repair the planet.
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