Early morning of January 1, 2016. Oscar goes to a nightclub with his ex-girlfriend, Vero, believing he still has a chance with her; but he is wrong. It is the same discotheque where Ana works as a waitress. When the disco closes, Ana and Oscar meet at a bar.

Morning of January 1, 2018. Oscar and Ana have been together for ten months. They both have a horrible hangover. They have celebrated New Year's Eve in her apartment and it's a mess; but they don't care. They only have one plan: to spend the day in bed. They are happy and in love.

January 1, 2020. For some months now, the distance has been between Ana and Oscar, and so they have decided to make a quick trip to Berlin where they will stay for only twenty-four hours: a whole day to get to know the city, enter one of the most famous clubs and meet again.

31 December 2021. Anna lives in Lyon and has a boyfriend, Manu. She has set up a catering with her friend Silvia, "Spanish Delicias." Her sisters Rocío and Irene have gone to visit her with her mother, Isabel, to celebrate New Year's Eve with the family. Ana just found out something important.

It’s the morning of December 31, 2024. Ana and Óscar are in a hotel in downtown Madrid. They believe they have come to a decision about them, about their relationship. But they still have 40 minutes to change their minds