When the vision came, he was in the bathtub. So begins the madness of Louis Daguerre. In 1847, after a decade of using poisonous mercury vapors to cure his daguerreotype images, his mind is plagued by delusions. Believing the world will end within one year, Daguerre creates his "Doomsday List" -- ten items he must photograph before the final day. The list includes a portrait of Isobel Le Fournier, a woman he has always loved but not spoken to in half a century.