Summer. A young couple has rented an old, lonely house by the sea during their vacations, to heal an opened wound by an infidelity. There they meet an enigmatic young, Elías Urquijo, with whom they will end up becoming best friends, and provide temptation for her. However, something in the house seems to react to the presence of the stranger, trying to warm the incoming couple who is Elias and which are his real intentions.