Partir un jour is a 2021 French short film directed by Amélie Bonnin .
The director later adapted this film into a feature-length movie with the English title Leave One Day which premiered at the opening of the 2025 Cannes Film Festival.
Julien has just published his first novel. As a soon-to-be father, he returns to Calvados to help his parents move since his father decided to retire. While doing the grocery shopping at the supermarket, he runs into Caroline, a childhood friend who is also pregnant and works as a cashier at the supermarket. They meet up that same evening for an outing to the municipal swimming pool. The unspoken words from the past take shape.
This short film is a musical, incorporating songs performed by the actors into the action, notably: