The story of the Underground is told, from the fall of Mobotropolis to the ascent of Robotnik.
Argus, is captured by Sleet and Dingo before he can reach the secret rendezvous where he was to meet Queen Aleena.
A homecoming is interrupted for Sonic, Sonia and Manic when Sleet and Dingo arrive to collect back taxes after returning to their birthplace.
Sonia discovers that the watch she received from her friend is actually a monitoring device for the Robotnik Intelligence Agency.
Sleet and Dingo make a plan to collect the taxes due to Robotnik but they intend to keep it for themselves.
Robotnik blackmails Cyrus by kidnapping his father and holding him hostage.
Blu Mankuma
Voice
Cusse Mankuma
Tabitha St. Germain
Brian Drummond
Merrilyn Gann
