When Marquita Shay, the adopted daughter of Canadian farmer John Grayson, reaches womanhood, Grayson enrolls her in a St. Louis boarding school where she meets and marries Humphrey Wells, the son of a wealthy financier. Treated like a servant by her in-laws, Marquita leaves the Humphrey's home to return to Grayson. She discovers that Grayson has committed suicide after falling victim to a phony stock deal perpetrated by Wells senior. Time passes and Marquita travels to New York where she becomes secretary to Baron Brinker who, with Wells, swindled Grayson. She brings Wells and Brinker to their financial ruin and reunites with her husband who renounces his father.