1895. Discovery of X-rays. Researchers and scholars are true martyrs, because they do not know how to protect themselves against radiation dermatitis. Professor Belcour has to have one hand amputated, his assistant Henri Vermont, aware of the danger, has the courage to break up with his fiancée. Withdrawn to the countryside, they eventually recover.

1895, découverte des rayons X. Les travaux d'une équipe de savants sur les rayons. Les chercheurs sont de véritables martyrs, car ils ne savent pas se protéger contre les radiodermites.