Underground Masquerade Sleet and Dingo plan to collect the taxes owed to Robotnik from the Duke of Velcronica but keep it for themselves. To avoid the wrath of Robotnik, Sleet and Dingo infiltrate the Underground to corral Maniac and friends to commit the crime and take the blame. The scheme is moving along well for the duo until they are caught on tape by Max, Manic's friend, who stops the deviant Sleet and Dingo enabling the Duke to keep his money.
Tangled Webs The sinister Robotnik blackmails Cyrus, an old friend of Sonic's, by holding his father hostage. Robotnik makes Cyrus gain the Hedgehogs trust and then has Cyrus convince them to save his father. Cyrus reluctantly informs Robotnik of the rescue plan so Robotnik can devise a trap for the Hedgehogs. However once Cyrus sees the Hedgehogs helping the kids of Mobius, he realizes assisting in the capture of the Hedgehogs is a bad idea. Instead, Cyrus helps the Hedgehogs and in the process they destroy another of Robotniks swat-bot factories.
The Deepest Fear On a trip to Port Mobius, Sonic, Manic and Sonia are told that ships are sinking due to the Mobian sea-beast. The legendary story becomes fishy when the Hedgehogs meet Captain Squeeze who informs them of a scam in which the townspeople must rely upon Robotnik for protection from the sea monster, when in reality it is Robotnik who is sinking ships, not a monster. Sonic must overcome his fear of the water and the monster to find the truth and thereby ending the fears of the sea side town.
Who Do You Think You Are? Queen Aleena's royal journals are rumoured to be buried under a palace in the city of Tashistan. As Sonic and his siblings scour the city in search of the scrolls, Sonia gets into trouble, causing her to lose her money. Sonia gets into more trouble as she inadvertantly sells her power medallion to a local merchant. A young boy from the village makes an attempt to keep Sonia safe, but the two are captured. Sonic and Manic must then work together to retrieve the power medallion, locate the journals and find the one thing that is most precious to them, Sonia.