Susan Van Dusen, an affluent New York girl in search of thrills and laughter, leaves home and finds work with a private detective agency. She meets Tod Waterbury, who, under another name, is working as a cab driver (in search of story material for a novel), and the two fall in love. Tod offers the detective agency a reward to find himself and arranges for Susan to be assigned to the case; since they are constantly together, Susan hasn't a chance in the world of finding him. Susan is assigned to another case and follows a gang of crooks to a dark and deserted house. After a series of harrowing adventures in the house, she comes to realize that the whole affair has been fabricated by Tod and her family to cure her of her lust for adventure. Susan marries Tod, greatly to her own and her father's delight.