Industrious accountant David Martinaud claims to be visiting his parents every weekend, but it's merely a cover for the labor-intensive refurbishing of his country cottage. The reason for David's secrecy is that his childhood crush, Lise, lives nearby, and, although she's married, he still believes they'll get together. His devotion to the idea borders on mania, and, when Lise's husband is accidentally killed, he quickly spirals out of control.

Two distant cousins meet at a wedding banquet for an elderly couple. Over time, a close friendship develops between them, but their spouses begin to think that they are more than just friends.