The book is autobiographical, but told from the third person. It deals with the exorcism of personal demons and discovering one's strength. It also deals with relationships among people, in this case, Paulo and his wife. Together with her, he embarks on a journey through the soaring heat of the Mojave desert. During the 40 days journey, surrounded by doubts and temptations and entering their innermost conflicts and questions, they met the valkyries, strange warrior women.