1792. Mary Wollstonecraft transforms herself into the radical author of A Vindication of the Rights of Woman, in which she dares to propose that women are equal to men. Mary supports herself with her pen until an illicit love affair challenges her every belief about romance and marriage. 1818. The daughter of Mary Wollstonecraft, passionate Mary Shelley struggles to balance marriage with motherhood while nursing twin hopes that she might write something of her own one day and also discover the truth of her mother's unconventional life. Mary will unlock her mother's secrets, all while leading to her own destiny as the groundbreaking author of Frankenstein.