Dr. J. Dockweiler Droop (Robert Woolsey) is a carnival charlatan, scamming local shills out of their hard earned money.
As they pass through a small town, Rosie falls in love with Billy Lowe (John Darrow), and pleads with Dockweiler to leave the carnival life and settle down.
While at the party, Dockweiler decides to get back at the townspeople who have heartbroken his daughter, and runs a crooked shell game, bilking the locals of large amounts of cash.
When Rosie discovers that Billy has true feelings for her, and intends to marry her, she asks Dockweiler to lose back the money he has won.
Mordaunt Hall, of The New York Times came right to the point in his review, "One of the cinema's minor indiscretions, an item entitled "Everything's Rosie," was inflicted last evening on a small audience at the Globe which found it as lacking in wit as in intelligence and ordinary good taste.
The sounds of leaves rustling and bird calls were successfully recorded, along with natural wind effects, while in the field at Sherwood Forest, outside Hollywood.
Sound engineer Hugh McDowell, Jr. had invented the equipment, the "silencer and ground noise eliminator", which enabled the recording.