On the eve of her 18th birthday, Alexandra Trese finds a book in her grandfather's library, provoking the guardians of the book who came in to protect it. The ruckus woke the kambal, who then protect Alexandra. After stopping the fight, her grandfather explains the contents of the book and how it tells of her fate as Alexandra prepares herself for the 12 tests to become a Mandarigmang Babaylan.