The true story of 16-year-old Mary Wollstonecraft Godwin's love story with the romantic poet Percy Shelley. Together they run away and live a bohemian and decadent life. But the breathtaking love story stops abruptly when the debts are escalating, and they lose their child. The circumstances make Mary start thinking about resurrecting dead people, and she starts writing the famous novel, Frankenstein. But the prejudices of those times will cause that the novel is attributed to Percy Shelley, forcing Mary to fight for claiming the novel as her own. Mary is played by Elle Fanning who we have previously seen in The Beguiled and Maleficent.