Description: A story of a temporal paradox. In 1981, Philippe d'Audign_ (Herv_ Jolly), based on the research of his great-uncle Franois d'Audign_ (Robert Vattier), developed a machine to go back to the time he calls a "chronosphere". Aboard this one, built in a cave at Luzarches, he went to join his great-uncle in 1885. He carries with him another of his inventions, which allows the visualization of the past images that are reflected in the mirrors. Philippe, in the midst of these images with Franois d'Audign_, falls in love with the image of one of his ancestors, guillotined during the French Revolution. He decides to travel around 1788 and convinces his ancestor to accompany him, hoping to meet the woman of his dreams and to save her, even if it means using the technology of the 1980s to prevent the French Revolution ...