It's another Revolutionary story set in old Williamsburg by the author of A Spy in Williamsburg. Twelve year old Andy Small is sent for safety to stay with his relatives in Williamsburg, but when he arrives discovers that the city is being threatened by the British. Andy was pleased, though, that he would after all have the chance to join the army as a drummer boy. When an injured drummer from the enemy receives shelter from the family and is convinced into switching sides, Andy sees the opportunity to get started on another ambition-spying. Masquerading in the boy's uniform he manages to carry out some minor counterespionage which might have helped save General Lafayette. Stock characters and situations are involved in this story, and Andy's timidity helps to play down the vitality of the action.