The story concerns two young French women, Louise de Chaulieu (1805–1835) and Renée de Maucombe (born 1807), who become close friends during their novitiate at the Carmelite convent of Blois. When they leave the convent, however, their lives follow two very different paths. Louise chooses a life of romance, whereas Renée takes a much more pragmatic approach; but their friendship is preserved through their correspondence, which continues for a dozen years from 1823 through 1835.