Holed up in Las Vegas after the tumultuous Battle of New Orleans, Dave is enjoying the VIP perks afforded a champion monster-slayer. He may be a superhero of swag and the toast of the town, but if some fire-breathing dragons have their way, odds are everyone will soon be toast. The hordes from the UnderRealms are regrouping for their next attack, but first Dave must face off against a ravishing Russian spy with a few superpowers of her own.