Hero Side Story

This section contains spoilers. Please read with caution.

City Escape- The hero side game starts off with a helicopter flying over a city with the letters "G.U.N" painted on the side. A man in the helicopter is reporting to base that the "captured hedgehog" has been taken on board, but when he looks back, he finds that the whole helicopter crew has been taken out, and the hedgehog has escaped.
Sonic, jumps out of the helicopter and grabs onto the railing, moments before falling into an early grave. Jumping on top, he rips a piece of metal from the helicopter, and jumps from the helicopter, wearing the metal as a snowboard. Hitting the San Fransico-like streets, he snowboards down the hills, trying to find a way out of this place, but not without the G.U.N machines after him.
Just when you think you've got everything under control, and you say Sayonara to G.U.N, a huge G.U.N truck starts to chase Sonic! You better run fast, or you'll be a blue smear on the road!
Sonic gets to the goal, finally escaping the truck, to find another G.U.N machine is trying to get him! F-6t Bigfoot trys to fly and shoot you down with missiles. No sweat, you'll show them to mess with the blue blur!
After defeating the Bigfoot, Sonic looks up to find a black and red hedgehog standing on the defeated machine, grasping a Chaos Emerald. Suddenly it clicks! Sonic has been arrested, because G.U.N had mistaken Sonic for this black and red hedgehog. Running at the hedgehog, the hedgehog grabs the Chaos Emerald and shouts "Chaos Control!" in which he is engulfed by light and the next moment, runs past Sonic. Sonic, who stops, amazed, realizes that this hedgehog isn't fast, but is using the Chaos Emerald to warp. The hedgehog introduces himself as the "Ultimate Lifeform" called Shadow. Shadow then precedes to warp away, in which Sonic turns and finds himself surrounded by G.U.N.
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