Sonic Underground
The sinister Robotnik blackmails Cyrus, an old friend of Sonic's, by holding his father hostage.
The sinister Robotnik blackmails Cyrus, an old friend of Sonic's, by holding his father hostage.
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Sonic outsmarts Coconuts, then stumbles into a Convention of Bounty Hunter Robots where Robotnik puts a price on his head. After Sonic defeats all the Robot Bounty Hunters, Robotnik creates Scratch and Grounder to be his S.S.S.S.S. Squad.
Scratch and Grounder fiddle with Robotnik's Warpinating Warpifier and send Sonic and Tails into the world of a Mobius Fairy Tales book.
Robotnik captures a flute-playing Ninja crane, taps his martial arts knowledge, and transfers it to Scratch and Grounder.
The Hedgehogs find out that Sonia has inherited a castle. She basks in the idea of having a castle for headquarters.
Robotnik organizes a track meet to lure Sonic into a trap.
Sonia is invited to a debutante ball, but before she can be officially announced to society, she and her brothers, Manic and Sonic have an important mission.
While lost in the wastelands of Mobius, Sonic, Manic and Sonia stumble upon an oasis called Lake Valley Resort.
Rumor has it that Queen Aleena's journals are buried in the city of Tashistan. Sonic and his siblings search the city for the scrolls.
On a trip to Port Mobius, Sonic, Manic and Sonia are told that ships are sinking due to the Mobian sea-beast.
The sinister Robotnik blackmails Cyrus, an old friend of Sonic's, by holding his father hostage.
Sleet and Dingo plan to collect the taxes owed to Robotnik from the Duke of Velcronia but keep it for themselves.
Sonia discovers that the watch she received from her friend is actually a monitoring device for the Robotnik Intelligence Agency.
Antoine decides to study martial arts but after he wrecks most of Knothole Sonic sends him off to practice in the woods. //Tails begins his training to become a real Freedom Fighter by learning tracking skills while on a camping trip.
In Part II, Sonic and Sally steal the Roboti-sizer plans, stop the Destroyer from polluting the Great Forest and save Little Sonic, Little Sally and Dulcy's mother, Sabina.
As Sonic begins to chow chili dogs for a snack, he finds a message in the sack from his mother urging him to head to Speedster Island.
The Hedgehogs congregate on the Floating Island in their latest effort to find their mother. But Sleet and Dingo also have an interest in this island.
A speed enhancing fluid deemed Sonic Tonic is created by Robotnik to make him as fast as Sonic so that he may finally catch him.
When Sonic and The Freedom Fighters take out Robotnik's main computer, they're trapped by Swat-Bots in an underground tunnel, only to be rescued by a handsome teenager named Griff. Griff takes them deep beneath the Big City.
When Sally uncovers Robotnik's plan to seed the cloud with toxic rain, they attempt a daring mission to sabotage the dirigible-like craft being transported by land vehicles. Mission fails when Sally, Bunnie and Antoine are captured.
When Robotnik launches a spy-orb that will uncover the Freedom Fighter's Knothole location, Sonic and Robot launch themselves up to the orbiting spy-sphere aboard a home-made rocket powered by Robotnik's discarded booster engine.
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