A couple who has suffered the tragic loss of their daughter decides to adopt a 9-year-old girl named Esther, who seems to be the answer to their prayers and offers them the opportunity to rebuild their lives. From the very beginning, Esther shows herself to be an intelligent and talented girl, but she also exhibits strange and enigmatic behavior that begins to unsettle her mother, Kate. As Kate tries to overcome her own demons, she gradually discovers that Esther is not an ordinary child. Her seemingly adorable behavior turns into a series of disturbing situations that include unusual jealousy and a dangerous obsession with her new mother’s attention.
As the tension grows, the relationship between Kate and Esther becomes complicated. The mother feels trapped between the love she develops for her new daughter and the growing suspicion that there is something deeply dark in her behavior. What initially seemed like a tale of love and family transforms into a chilling psychological game, where Esther's past secrets begin to surface. The plot twists intensify, and in the end, Kate is forced to fight for her family's survival. The atmosphere of anguish and the claustrophobic setting constantly make viewers question the nature of good and evil, leaving a lasting impression long after the credits have rolled.