Episode 4: Chaos Emerald Chaos - Alarmed by reports of unusual visitors from another world, the President dispatches an undercover agent to keep his eye on Sonic’s friend, Chris. Meanwhile, it’s pandemonium at a construction site when a workman accidentally uncovers a Chaos Emerald. Eggman races to the scene, but Chris grabs the powerful gem first. Soon Chris and Eggman are locked in soaring struggle as they grapple for the jewel high above Station Square.
Episode 5: Cracking Knuckles - Dr. Eggman wins a surprising new ally when he convinces Knuckles that Sonic is plotting against him. Chris is having a tough time hiding his new friends’ identities from Mr. Tanaka and Ella, so he whisks Amy and Tails away on a troublesome train trip to see Sonic in Silver Valley. Fueled by Eggman’s fiery lies, Knuckles goes, too... and challenges Sonic to a destructive duel!

Episode 6: Techno-Teacher - Eager to get to Sonic through Chris, Dr. Eggman creates Intellihente, a computerized teaching robot. The robot’s mission is to sniff out Sonic secrets, but he loves teaching, forgets Eggman’s assignment, and charms his way into the hearts of Chris and his classmates. Intellihente’s popularity makes Eggman crack. The doctor drops in at recess and demands that the robot do his duty. Will this robo-teacher learn his lesson... or will Eggman be out-classed?

Episode 7: Party Hardly - Chris has been working hard to keep Sonic and his other new friends a secret. But when his mom - famous movie star Lindsey Fair - plans a party at the Thorndyke mansion, Chris has to stay on his toes to keep things quiet. Once Chris’s Uncle Sam (the leader of the S-Team) and Mr. Stewart (Chris’s teacher) get on the guest list, Chris knows it’s an invitation for trouble! Can he manage to keep Sonic and friends in line and out of sight?