Tommy Deacon learns that a gift bequeathed by his aunt is hidden in her house inside a bust of Napoleon. However, the house has been sold, and is now a girls school and to gain admission Tommy has to pose as the elder brother of Anne, one of the pupils. His arrival in the school results in a variety of escapades, but Tommy resolutely persists in his search for the missing legacy...

Ce synopsis est en anglais : nous ne l'avons pas encore traduit.