Cabeza de Vaca was one of four survivors of the Narváez expedition and shipwreck. He became known as a shaman among the Native American tribes he encountered, which helped him survive. His journey of a number of years began in 1528. After his return to Spain, he published his journal in 1542. The screenplay by Guillermo Sheridan and Nicolás Echevarría is based on Cabeza de Vaca's journal Naufragios y comentarios ("Shipwrecks and Commentaries").[1]