This box set unsurprisingly covers three films directed by Louis Malle, two coming close by one another in the 1970s — Murmur of the Heart (1971) and Lacombe, Lucien (1974) — and the third in the 1980s, Au revoir les enfants (1987). They are linked by being coming of age films, about growing up in France in various eras, whether the 1950s of the first, or the World War II setting of the other two.
There’s an additional disc of supplementary material, which as of writing I haven’t yet watched, but will update this post when I do.