Overwhelmed by loneliness and marital despair, 42-year-old Inés Molina (Alexandra Jiménez) attempts to drown herself in the sea. She is saved by Hugo (Fernando Lindez), a 15-year-old student. The rescue ignites an intense, obsessive affair between the adult woman and the minor. As Inés's obsession grows, she goes to extreme lengths to keep their forbidden relationship hidden, even maneuvering to date and sleep with Hugo's wealthy father, Tomás (Antonio Gil), to maintain access to Hugo's life. When family members discover the forbidden liaisons, the web of deceit escalates into blackmail, accidental death, and catastrophic consequences for everyone involved.