Julian Peveril, a Cavalier, is in love with Alice Bridgenorth, a Roundhead's daughter, but both he and his father are accused of involvement with the "Popish Plot" of 1678. Sir Geoffrey Peveril and Major Bridgenorth had been boys together; and although they adopted different views in religion and politics, the major's influence had saved the Royalist's life after the battle of Bolton-le-Moor, and Lady Peveril had brought up his motherless girl, Alice, with her own son.