After the death of her mother, Bree stumbles onto a secret society of demon hunters called Legendborns, who are descended from the original Order of the Round Table. A chance encounter reveals the magic buried within Bree and the truth about her mother's death. Bree's magic is much more dangerous than the Order of the Round Table and rooted in African Rootcraft. As Bree gets closer to the scion of Arthur, she becomes suspicious the order is responsible for her mother's death.