Somari the Adventurer, an Italian plumber with distinct visual similarities to Mario, has become lost in his plumbing pipes and has emerged in Sonic's world. While wandering through the landscape Somari encounters numerous roboticized animals that begin to attack him. These robotic animals, the creations of the mad Dr. Robotnik, are part of a scheme plan to convert all animals into robots. Attempting to put an end to these transformations, Somari progresses through 6 zones to defeat dr robotnik