Plot: The Spanish horror-thriller follows a shy young woman named Esther who grows increasingly suspicious that her enigmatic and secretive boyfriend, Robert, is being unfaithful. Driven to near madness by his unusually long work appointments and harsh reactions, she decides to track him to a secluded house, hoping to uncover the truth about his apparent cheating. Instead of infidelity, she uncovers a deadly and sinister secret: Robert cultivates a gruesome "bloody hobby" that knows no bounds, turning her life into a terrifying and seemingly endless nightmare.
