Based on the upcoming book of the same name, "Cursed" is a re-imagining of the Arthurian legend, told through the eyes of Nimue (Katherine Langford), a teenage heroine with a mysterious gift who is destined to become the powerful (and tragic) Lady of the Lake. After her mother's death, she finds an unexpected partner in Arthur, a young mercenary, in a quest to find Merlin and deliver an ancient sword. Over the course of her journey, Nimue will become a symbol of courage and rebellion against the terrifying Red Paladins, and their complicit King Uther.