Sandra is a 40 year-old woman who lives with her husband Héctor, a bus driver who won't allow her to work. Sandra has become a slave of home chores and daily routine, until one day she meets Darío, a teenager who works at a grocery store near her house and who is trying to finish college. Sandra kindly offers Darío to help him prepare his final exams, but she will start to become increasingly attracted to her young pupil.
