The premises of the game is simple. Each stage begins with the robbers, named Robo and Mobo, looking at a projector screen. Once getting an overview of their target, they break in and rob the place blind. However, each place is armed with security ready to arrest them. If they are caught, or take too long, the brothers are sent up the river. The brothers have recently made a surprise appearance in Sonic & Sega All-Stars Racing, driving a black getaway car.