Raimundo Davidson is a young man in love with Florence, the niece of Dr. Belforger, master of hypnotics, who takes advantage of this faculty to intervene in a series of illegal business with his friend Burner. Aware of the fortune of Davidson, they accelerate their marriage with Florence to obtain it through the girl. Davidson is put on notice of Belforger's activities by an insurance firm. Discovered and stopped by the doctor, Davidson finally meets with Florence.