Erick Salazar is a respected, middle-aged college professor trapped in a sterile, sexually distant marriage with his wife, Mariana. The fragile domestic peace of the household is shattered when their daughter, Denisse, brings her gorgeous university classmate and roommate, Alex, to live with the family. Feeling neglected at home and deeply drawn to the younger woman, Erick gives in to temptation and embarks on a highly volatile extramarital affair with his daughter's best friend. Operating directly under his wife's nose and inside his daughter's personal space, the cheating husband plunges into a web of reckless lust and domestic deception, sparking a dangerous psychological game where the discovery of the secret threatens to destroy the entire family unit.