An inventor adds new innovations to an air company's planes, prompting the owners of a rival company to set out to steal them. The stakes are sky-high as an airman and an aviatrix find themselves in constant peril, both on earth and above the clouds.

An inventor adds new innovations to an air company's planes, prompting the owners of a rival company to set out to steal them. The stakes are sky-high as an airman and an aviatrix find themselves in constant peril, both on earth and above the clouds.

Richard Castleman, master of Winnecrest Hall in Louisiana, goes on a sea voyage recommended by his cousin and physician, Harry Chilton, who thereupon begins romancing Castleman's fiancée, Jeanne Lamont. When word arrives of Castleman's death, Chilton prepares to usurp the fortune and property of the dead man. Danny Rowland, who is found wounded by two wandering crooks, Dominie and The Squirrel, opportunely arrives at the estate seeking food and rest; and because of his resemblance to Castleman, he is welcomed as the master. Dominie is introduced as an English cleric and The Squirrel as an Italian count, while Danny falls in love with Jeanne, who believes him to be her fiancé. Chilton, however, suspects the trio and finally unmasks them. It then develops that Danny actually is Castleman, who had decided to reform the two men who befriended him and to expose the dishonesty of his cousin.