QUEEN ALEENA of Mobius gives birth to triplets: SONIC, the world famous blue hedgehog; the green, punk haired MANIC, and the pink, fashion conscious SONIA. As a deadly fate is predicted for the young hedgehogs, Aleena separates the triplets to protect them. Meanwhile, the evil DR. ROBOTNIK has gained control of Mobius, and threatens the population with being "roboticized". SONIC, SONIA and MANIC search for their mother while being pursued by two of ROBOTNIK'S bounty hunters, SLEET and DINGO and an army of menacing SWATbots. SONIC, SONIA and MANIC form a rock band called SONIC UNDERGROUND and lead the rebellion against Robotnik. WEDDING BELL BLUES When Robotnik announces he plans to marry Queen Aleena, the shocked sonic siblings race to the rescue, unaware it's a trap.. TO CATCH A QUEEN Argus, the former captain of the Queen's guard, arranges a secret meeting with her. But he is soon intercepted by Robotnik's bounty hunters, Sleet and Dingo, who have every intention of feeding the soldier to the roboticizer, the Sonic trio race to the rescue.. MOBODOON Evading Sleet and Dingo, the hedgehogs find themselves in a town completely untainted by Robotnik's hand. Where the people are kind-hearted, and the food is free! Sounds like an ideal place, but there is more to Mobodoon than meets the eye, after using the power stone, the siblings discover that this is where they were born! Before further questions can be answered,Sleet and Dingo attack with an army of SWATBOTS, to preserve their past, the hedgehogs fight for Mobodoon's future.. THE PRICE OF FREEDOM Sonia gets down 'n' dirty with Sleet and Dingo, and to freshen up, she and her brothers journey to east Mobius. There, Sonia is reunited with an old friend, Mindy Latour, and her father. Mindy gives Sonia a locket. Unknown to Sonic's sister or Mindy though, is that the locket is a tracking device designed by Robotnik. Sonia finds out too late, and soon, Mindy's kingdom is swarming with similar wristwatch-style robots, all programmed to capture the hedgehogs! Can the siblings stomp out this bug problem?