Fantômas is a man of many disguises. He uses maquillage as a weapon. He can impersonate anyone using an array of masks and can create endless confusion by constantly changing his appearance.
A home, a motorcar, servants, the latest fashions: the most eligible and most finicky bachelor in Paris offers them all to Gigi. But she, who's gone from girlish gawkishness to cultured glamour before our eyes, yearns for that wonderful something money can't buy.
A beautiful and sophisticated teenager is placed in a regimented French girls' boarding school after her father apparently commits suicide over a business scandal. She immediately gains admirers -- a lustful middle-aged artist, a handsome young composer, a fellow female student -- as well as a jealous rival. With the help of her schoolmates, she attempts to elope with the composer, but the adults catch on to the plot, and she is locked into her room at night.