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. Robotnik has constructed an evil weapon that will capture and robotisize all members of the resistance all over the world. The Underground must hijack this weapon and insert a deactivating device before the brain of the vehicle is installed. Sonia daydreams about the party, becomes distracted and is caught while executing part of the mission. Sonic aids Sonia to help her focus on their mission and still make an appearance at the ball.