Book I - trinity of the dark legacy cycle details the violent end of the kai order - an ancient, spiritual guild of warrior guardians and priestesses who have sworn their lives to protect the oracle queen of atlantis - a...Book I - trinity of the dark legacy cycle details the violent end of the kai order - an ancient, spiritual guild of warrior guardians and priestesses who have sworn their lives to protect the oracle queen of atlantis - at the hands of maniok, the being referred to as the "Great evil" In the age-old song of the oracle king.