Set in the early 1950s, this unconventional biopic charts an imagined chapter in the life of Shirley Jackson, one of the greatest horror writers of the twentieth century. When her husband invites a newlywed couple into their home, the reclusive and anxiety-prone writer becomes enamoured with Rose, her new muse. As Shirley's obsession plunges her into a quasi-delirium, it awakens a repressed femininity that could inspire her next masterpiece.