When Kennedy Waters finds her mother dead, her world begins to unravel. She doesnt know paranormal forces are the ones pulling the stringsuntil identical twins Jared and Lukas break into Kennedys room and destroy a spirit sent to kill her. The brothers reveal that her mother was part of an ancient secret society that protects the world from a vengeful demona society whose five members were all murdered on the same night. Now Kennedy has to take her mothers place in the Legion if she wants to uncover the truth and stay alive. Along with two new Legion members, the teens race to find the only weapon that might be able to destroy the demon.