A country boy, Mario, who dresses the hair of the sheep on his farm, leaves his sweet fiancée Aline and goes to Paris, where he meets and falls in love with a kept woman, Edmonde. First he seduces her maid Colette and then manages to convince Edmonde to deceive her older lover, M. Louvet, and spend a night with him. After a night spent hiding on Edmonde's balcony because of the unexpected arrival of M. Louvet, Mario vows to become rich and to have his own home. Riches and prestige arrive unexpectedly when, at the salon where he works as an assistant, he transforms Mme. Louvet, the wife of Edmonde's lover, into a ravishing blonde, thus rekindling her husband's long-dead love. So thankful is Mme. Louvet, that she makes Mario famous, and by his charm and hairdressing talent, he becomes the "King of Paris." He buys fancy clothes and takes on a black servant. He also takes Edmonde as his mistress, entertaining her in high style, and soon proposes to Denise Louvet, the daughter of the Louvets. Earlier, Mario had returned to the country when he felt low and married Aline. Now he calls a cardiac specialist to care for the young girl, as she has been reported to be suffering from a nervous crisis since he has asked for a divorce. As the doctor asks Mario about his feelings for Aline, Edmonde arrives with news that she will marry a rajah, who is taking her to India. Meanwhile, the doctor has a chat with Aline and tells her that Mario will soon renounce his grand life and will need a long rest in the country. Mario is then abandoned by Denise and all his rich clients. He returns to Aline and his sheep in the country, and the couple have many children.