At the beginning of the tv series, Sonic, Tails and Knuckles starts their new adventures with Tom and Maddie, when Dr. Robotnik having revenge on Team Sonic and teams up with his assistant Agent Stone, a robotic version of Sonic named Metal Sonic and more of Sonic Villains, Sonic and his crew must team up with a boy named Chris Thorndyke, Amy Rose and Cream with Cheese, The Freedom Fighters to defeat Eggman Empire
