Classic Sonic is back to his dimension after the events of Sonic Forces. He discovers Eggman is collecting the Chaos Emeralds and already has four of them. Sonic must gather all the Chaos Emeralds before Eggman.
Team Sonic, Team Rose, and Team Dark compete on the Wisp Circuit course, while Dr. Eggman is up to his usual trickery.
While escorting Dr. Eggman and his hapless new helper Trip through a perilous ruin, Fang the Hunter will need to muster all his cunning to overcome past mistakes and escape the coils of a fierce new enemy. Meanwhile, Eggman discovers what may be the key to his next dastardly scheme.
