A mother of two gathers her loved ones to celebrate her birthday in her big house near the Loire Valley. The festivities are disrupted by the arrival of her daughter, who is known for her unpredictable outbursts.
Unfortunately the movie Happy Birthday is not yet available on HBO Max.
| Directing | Cédric Kahn | Director |
| Production | Sylvie Pialat | Producer |
| Writing | Cédric Kahn | Writer |
| Costume & Make-Up | Alice Cambournac | Costume Designer |
| Camera | Yves Cape | Director of Photography |
| Sound | Jean-Pierre Duret | Sound Recordist |
| Writing | Samuel Doux | Writer |
| Editing | Yann Dedet | Editor |
| Sound | Thomas Gauder | Sound Recordist |
| Writing | Fanny Burdino | Writer |
| Art | Guillaume Deviercy | Production Design |
| Sound | Sylvain Malbrant | Sound Recordist |
