Our heroes head to the radioactive remains of Las Vegas for a little R&R between races, hoping for a jackpot of ammunition to add to their dwindling supplies. Instead, they arouse the ire of the ganglord Neon Caesar, who's got an ax to grind with Red. Meanwhile, Muttley and his vehicles are lost in the labyrinthine sewers beneath the streets when the gangs of Vegas unite to eradicate the Racers. Our heroes must go it alone against the combined might of the Caesars, the Pharaohs, the Clowns, and the terrifying Combovers, who have great weapons. Terrific weapons. Really, they have the best weapons.