Private investigator Tag Finn, a former special operations soldier and member of the CIA's elite Special Activities Division, is having a nice quiet evening at home until his phone rings, and he answers it to hear the voice of his beloved ex-girlfriend Estelle pleading for his help. She abruptly screams, the line goes dead, and the next morning Finn learns that Estelle and her entire group of UCLA archeologists have gone missing from their dig site at the mysterious Chalupa Ruins in Costa Rica. Due to Finn's current occupation and unusual background, UCLA's dean of archeology hires him to oversee the search for the missing team, and he heads down to Central America, where he is joined by beautiful local archeologist Dr. Alessandra Hitzig. Together, they will venture into the primeval jungle to the Chalupa ruins and be caught between myth and reality when they unwittingly face off against a thousand year old ghost king and his army of undead warriors as well as a ruthless billionaire businessman intent on acquiring the land around the site. Thrills, chills, spills, and indeed some sexual frills await, so come along with Finn and his beautiful new colleague on this incredible adventure where they must use every ounce of their cunning if they hope to solve the ever deepening mystery that is the Chalupa Conundrum.