In the quaint English countryside, Charles Condomine, a successful novelist, is seeking inspiration for his next book. To gather material, he invites the eccentric medium Madame Arcati to conduct a séance at his home, much to the amusement of his wife, Ruth, and their friends. However, the evening takes an unexpected turn when Madame Arcati inadvertently summons the mischievous spirit of Charles's first wife, Elvira.