Norma, a 50-year-old mother desperate to save her sick son, decides to perform a dark ritual guided by a witch who details strict rules: Do not make a noise, do not mention God, and above all, Do not leave the house for 12 hours. However, what begins as a promise of hope will soon become a terrifying psychological test. Stalked by a creature that evokes Norma's deepest fears, forces her to face what she fears the most to save the one she loves.