Fitzjohn (Peter Sellers) is a retired general who is miserable at home with his shrewish wife Emily (Margaret Leighton). He dreams of younger days when he enjoyed the platonic company of the beautiful Ghislaine (Dany Robin). After many years, she shows up at his door and expresses her desire to take their relationship beyond the platonic level. When his plans are temporarily postponed, he leaves her in care of his right hand man. His aid and Ghislaine fall in love, prompting Fitzjohn to begin court-martial proceedings against his unfaithful aide. When the lineage of his aide is discovered, he tries to halt the trial in this ironic comedy taken from the play by Jean Anouilh.