Continuing the special tie-in tale with Sega's Sonic Adventure Dreamcast game. Having been accepted as celebrities in the Hidden City of the Ancients, Sonic plays super-hero and patrols the streets of Station Square. But can he and his friends survive the menace that lurks in the night? "A Door To The Past." As Knuckles explores the Mystic Ruins for shards of the Master Emerald, his is floored by a mysterious vision of the past showing another side of the echidna race. Can Knuckles handle it? "Double-Crossed Circuits." A solo story featuring E-102 "Gamma" from the Sonic Adventure game - setting the stage for Sonic Super Special #13.