One day in Mobius, Sonic and his siblings Sonia and Manic are the children of Queen Aleena, the rightful ruler of Mobius. However, Sonic and his siblings are pursued relentlessly by Doctor Robotnik and his sidekicks, Sleet and Dingo. Sonic and his siblings would later meet other characters such as Knuckles, Athair, Oracle of Delphius, Cyrus, Trevor, and many others!

Sonic: Hey :D

Sonia: Oooooh a human? :O

Manic: Welcome to the year 1999. :D