Paris, 1938. The Peruvian poet César Vallejo is in the hospital, afflicted with an undiagnosed illness, and unable to stop hiccuping. His wife calls on an acquaintance of her friend Madame Reynaud: the Mesmerist Pierre Pain. Pain, a timid bachelor, is in love with the widow Reynaud, and agrees to help. But two mysterious Spanish men follow Pain and bribe him not to treat Vallejo, and Pain takes...