The young widow Penelope Manton, who devoted herself to caring for soldiers suffering from mental disorders due to their experiences in the war, willingly took into her care the hero of the Battle of Waterloo, Gabriel Devereux, Lord Bromwich. However, very soon it became clear to her that something was wrong with him. Gabriel does not look like a madman; seizures occur only when he is in a hospital. So what's the matter? Gradually, Penelope's willingness to help Lord Bromwich and compassion grow into sincere friendship, and friendship into true love. But Gabriel, still tormented by mental anguish, is afraid that in his madness he will destroy the trusting young woman in love with him...