Sonic just had his final battle with Robotnik. On that dreadful fight Robotnik pulled a gun on Sonic, and fired at his legs. With no one to help Sonic jumps at the gun, and pulls it on Robotnik, and fires. Robotnik suffered a fatal bullet wound, and never made it. Morified, Sonic heads out to seek a deserted land so that he may live in peace. In Robotnik's old base, a large armada of robots storms through Central City, Knuckles, Tails and, others try to fight them off, but were no good.
7 YEARS LATER
Sonic runs to Central City to see his old friends, but he notices that its over run with robots. "I thought Robotnik was dead" Thought the Hedgehog. He then smashes his way to the main control room, only to find an android of Robotnik. Sonic was immediately captured due to the Android's good plan. Taken to the jail room hee sees his friends tied up, and in chains. When he talks to them they just shun him away. "Where's Knuckles?" asked Sonic. Tails replied "In there, he was chained up severely, due to him being the one to repeatedly try to escape."