Barcelona, 1988. In a boring Catholic girls' school, the violent and harsh Sister Ursula (Cristina Piaget) frightens teenage girls with her ruthless methods. Ursula learns that Mary (Lola Marceli) is pregnant and abuses her mercilessly in the name of purification. Mary's dorm sisters: Joana (Montse Pla), Christine (Tet é Delgado), Yulalia (Oriana Bonet), Joey (Paulina G á lvez) and Susanna (Natalia Dicenta) fight to save their friends, but accidentally kill Sister Ursula. They secretly sunk the body into the holy pool in the school and agreed to keep it a secret forever. Eighteen years later, the girls had their own lives, and they almost forgot about that incident. But Sister Ursula did not forget that with the transformation of the holy pool, her body reappeared and the evil idea of vengeance began to spread.
4.0
