L'Arbre de Noël

The Christmas Tree
Directed by	Terence Young
Produced by	Robert Dorfmann
Written by	Michel Bataille
Starring	William Holden
Music by	Georges Auric
Cinematography	Henri Alekan
Edited by	Monique Bonnot

L'Arbre de Noël (internationally released as The Christmas Tree) is a 1969 French drama film directed by Terence Young. It was defined as "the most tearful film of sixties". The film was co-produced by Italy where it was released as L'albero di Natale.

The story follows a Frenchman named Laurent and his son Pascal, who live somewhere in France. Along the way, the widower Laurent meets and falls for the beautiful Catherine, but also learns that his son is dying after witnessing the explosion of a plane with a nuclear device inside. Finding this out, Laurent and Pascal have a string of adventures with Catherine along.

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Wikipedia