At the turn of the century Théophile and Suzanne Valence sail into the Mexican copper-mining town of Santa Sofìa. Théo has travelled here to build a metal church designed by his mentor, the great engineer Gustave Eiffel. His wife Suzanne, wayward and graced with the gift of clairvoyance is deeply in love and has insisted on accompanying him. But the magical landscape inspires no answering passi...