Upon his father’s death Jules Beaubien's is left a rich man but also one with a mission. Find his until now unknown half-sister, take her in and educate her. After investigating he discovers she has met a tragic fate after falling for a roue who had abandoned her. Swearing vengeance, he set off in a quest for justice in her name.

A hydroplane pilot is in love with a wealthy old scientist's granddaughter. However, a fortune hunter also desires to marry the granddaughter for her money, even though she is in love with the pilot. Based on a successful play that starred John Barrymore.