
The story is about Catherine Morland, a naive, seventeen-year-old girl who longs to be the sort of heroine she has read about in the 1794 gothic novel by Ann Radcliffe, The Mysteries of Udolpho. Catherine joins family friends Mr and Mrs Allen when they spend a few weeks in Bath. There she meets Isabella and John Thorpe, and the mysterious Henry Tilney, with whom she falls head-over-heels in love. After being introduced to Henry's father and sister, Catherine is invited to spend some time at their home, Northanger Abbey. It is here that Catherine's overactive imagination leads her to invent farfetched mysteries and villainous situations.