Maybe

Arthur is invited to a New Year's Eve party to celebrate the year 2000. His girlfriend Lucie would like a baby from him but he refuses. Through the ceiling of the toilets, he discovers a passage leading to this futurist Paris. There, he meets an old man Ako who affirms he is his son and that he wants to exist. Otherwise he will vanish into the air. Arthur is still hesitant because his life is an unfulfilled one: a has a little lucrative job, is uncertain about his future and things are getting out of hand when Ako discovers the passage and interferes in the party. Maybe featuring Romain Duris and Jean-Paul Belmondo is not currently available to stream, rent, or buy but you can add it to your want to see list for updates. It's a comedy and drama movie with an average IMDb audience rating of 5.8 (1,671 votes).