A man comes to pick up his son at his ex wife's house, just like every weekend. As always, he waits at the entrance of her apartment building for his son to come down stairs. But this Saturday, it takes a little longer. Their son wants to finish watching a TV show. And so it happens that the separated couple starts to talk again via the intercom. Suddenly the former intimacy is back, the conversation almost turns into a flirt. The most painful thing about a separation is the fact that you remain so close to each other.