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?
A solo story featuring E-102 "Gamma" from the Sonic Adventure game - setting the stage for next month's Sonic Super Special #13.
Night of Chaos
Sonic enjoying running on the rooftops in Station Square at night in the rain notices the police. The police are shooting Chaos, but their guns have no affect on him. Sonic decides to attack Chaos, but Chaos is fighting back hard. Chaos climbs up a flagpole, but Sonic runs around it causing Chaos to fall off. Chaos flees into the sewers, while Sonic is congratulated by the police. Dr. Robotnik watching from above is excited about Sonic's test and plans to use Chaos to destroy him.
Door to the Past
Knuckles the Echidna observed a spear that would be "nasty to use in a fight." He remarks that he never saw an echidna use this kind of weapon before. He's then seemingly stuck by a light ball in the forehead. The light ball reveals herself to be Tikal, who asks for Knuckles' help. He refuses, so to convince him, she tells him about the Knuckles Clan, the war they fought with the Mysterious Cat Country and the unleashment of Chaos. Knuckles was still confused of why she needed his help, so Tikal explains that she and the Chao sealed Chaos in the Emerald, but not without consequences.
Eggman, elsewhere, was receiving frogs-with-tails from his E-100 Series. The only one that managed to get the frog he wanted was E-102 Gamma. He then took the frog and used a new device that would take Froggy's chaos energy and put it into Chaos. After Chaos acquired the energy, Eggman then sent it to look for the others.
In the Mysterious Cat Country, the Cat Queen told the other Chaotix that she believes they pose a problem. Vector objects but the Queen tells them to stay in for they are known to eat their children if they misbehave. Julie-Su says they have to be kidding when Locke, suddenly appearing, tells the Queen she better be.
Gamma created to serve Dr. Robotnik has been put to the test with targets of Sonic, Tails and Knuckles and has fulfilled his task of collecting Froggy. Dr. Robotnik orders Gamma to retrieve the bird that has been captured along with Amy Rose. Gamma experiences life and feelings and sets Amy and the bird free.
Vector: (to the Cat Queen) You may rule, but I'm no fool! I hear your rap, and I say you're full of cr--