Ana turns 30 on New Year's Eve and her life is still unresolved:
she lives in a shared flat, she doesn't like her job, she often changes friends... Óscar turns 30 on New Year's Eve with his life nearly figured out: he is a vocational doctor, has loyal friends, and a relationship that comes and goes. On the night they both turn 30, they meet, fall in love, and embark on a relationship that will last for ten years.