Valka the Wolf Slayer helps an Atlantean king regain his throne. The great master, Kukulcan, asks Valka to accompany him to Mesoamerica. While Kukulcan travels to Tiahuanaco, Valka leads the Toltecs in a defensive war against invading Nahuas. In an exciting climax, Valka descends to Xibalba, the Land of the Dead, with the Toltec prince in a dramatic rescue. Valka faces a series of hair-raising challenges that require all of his skills in order to return alive.