Young engineer Raymond Ozoux, accompanied by his uncle, arrives in Peru to meet his fiancée, Marie-Thérèse. Meanwhile, descendents of the Incas are preparing a great feast during which a virgin will be sacrificed to the Sun, walled up alive in a secret temple. At the same time, a mysterious Inca bracelet is sent to Marie-Thérèse purporting to be a gift of the Sun to his future bride... The young girl is then kidnapped by the Incas and Raymond, his uncle and Marie-Thérèse's father set out on a trek across Peru to free her while a revolution shakes the country...

A suspenseful thriller in the vein of H. Rider Haggard by the creator of Rouletabille and the Phantom of the Opera.