Bobby Deerfield, a famous American race car driver on the European circuit, falls in love with the enigmatic Lillian Morelli, who is terminally ill.

Disguising himself as a geisha and introducing himself as Madame Mufiko, a certain Max Fox opens a school in Paris where he proposes to teach the Japanese art of love. He recruits a few students, boys and girls, to whom he teaches to imitate the positions represented on old prints. The young people set themselves to it with such ardor that soon the girls are pregnant. In addition, the school is put under police surveillance and the false Mufiko sees her true identity revealed.