During a mission on Mobius to rescue Cream the Rabbit and Cheese the Chao from Dr. Eggman's headquarters, Sonic and his friends are caught in an explosion that transports them to another dimension occupied by humans.
As the President sends in GUN forces to stop Sonic from destroying the Mirror Towers, Dr. Eggman reveals that his Sunshine Balls are secretly brainwashing the citizens to turn against Sonic.
S2E41 21 min