[2][3][4] Bob Warburton, a wealthy young bachelor, falls in love with Betty Annesly and, in order to be close to her, is hired as a gardener by her father, Colonel Annesley.

However, the girl discovers the trick of her admirer and, to teach him a lesson, insists that the new gardener serve at the table during an important lunch.

Bob refuses the task and so is replaced by Count Karloff's butler who offers, for the occasion, to lend it to the landlord.

Bob realizes that Badkoff, the butler, is an enemy agent tasked with stealing secret helicopter plans from Betty's father.

Disguised as a waitress, Bob puts a spoke in the wheel of the spy, saving the precious documents.