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. UNDERGROUND MASQUERADE Manic begins to backslide to his old ways when he encounters a group of teenage pickpockets led by Max. Meanwhile, Sleet and Dingo are plotting to avoid giving the taxes they are collecting to Robotnik. They only need someone to frame for a theft, and Manic is the perfect victim. TANGLED WEBS Whilst Sonia and Manic attempt to take out Robtonik's new SWATBOTS installation in a highly dangerous mission, Sonic is lapping it up at a nearby party! At the party, Sonic runs into an old friend called Cyrus, and the two catch up on their individual adventures. Back at the SWATBOTS factory, Sonia and Manic, controlling two new pod weapons, succeed in taking out a main control panel, but it's not long before their plans are discovered by Sleet and Dingo, who intercept and successfully capture the siblings. Will Sonic come to the rescue? THE DEEPEST FEAR Sailing the Mobian seas, Captain Sonic is hot on the trail of the elusive creature, Moby Deep. He's close to capturing it too-until he is woken up by Manic. It was all a dream. After hearing of sightings of a monstrous "Sea Creature", which has scared the mob an populace, Sonic, Sonia, and Manic decide to trek the Mobian Sea, the Siblings head for Port Mobius, Sonic outruns his brother and sister and gets to the port first-and walks right into a trap set by Dingo! Sonic attempts to elude the Bounty hunter, but Dingo's shape shifting abilities makes this almost impossible, luckily Sonia and Manic arrive to pull Sonic out this tight spot in the nick of time, running over a door-shaped Dingo with their van! All of a sudden, Robotnik's SWATBOTS swarm in on the siblings, in a panic, Sonia accidentally drives the van OFF the pier, and onto a passing vessel. WHO DO YOU THINK YOU ARE The Sonic Underground arrive in Mobia in search of the Queen's Journal. In the city Sonia loses her memory and meets Raphi, one of the town's resistance…