Driving through a brutal thunderstorm in Wales, three travelers take refuge in an eerie house owned by the Femm family. Reluctantly admitted by Horace Femm, the three sit down to a strange dinner. Horace is neurotic; mute butler Morgan is an alcoholic; and Horace's sister, Rebecca, raves about chastity. When the storm brings in an industrialist and chorus girl Gladys DuCane Perkins (Lilian Bond), Morgan's lust and Rebecca's ire are ignited.
