Rotogin battles have been banned in Nalus City for the past 8 years. However, there is an underground organization known as the U.B.B. which sets up illegal robot tournaments using the city as their battleground. Rebuilding a robot she found in the junkyard, Kaylin Dakota enters into the shady world of illegal robot battles and gambling, in hopes of saving her friend Asper's life. Asper's fate lies within this young girl and her junk bot.