This film although funny in parts sounds more like an inside joke than anything else.
Two ace actors seemingly playing at acting and around the craft of acting; like watching Jimi Hendrix playing before a gig; warming up.
The storyline is pitiful and could only resonate with 40-something actors. I am a huge fan of both actors here and rate Tell No One (Ne le dis à personne) as one of the best movies of the last 20 years; but this here I shall say it again seems like an inside joke; something you dreamt up and or thought of doing but should probably not have allowed to get a real airing ... At times you seriously question the sanity of the endeavour. Maybe therapeutic :)
Shame. Still: watch it if you like Canet and Cotillard.