This movie shows very well what (I imagine) it happens after an event like the one from November 2015 in Paris: life just cannot be the same. Survivors are haunted by what they have experienced and they feel deeply connected to the other people that survived - many of whom feel the urge to revisit the bistro where this took place and make sense of what happened. This experience is so profound, intimate and shifting for someone that this basically creates a new family, of survivors, at the expense of the existing relationships.
The main character finds herself trying to remember what happened, partly because she is being accused of blocking herself in a toilet in the moment of the attack and denying a hiding place for the others, partly because she cannot find shelter in her former relationships (friends, lover) all of which don't seem to understand why she cannot move on.
Among trauma, PTSD (portrayed in a very compelling way) and her struggle to piece things together, we also discover hope and human connection, and this is one of those movies where suspension of disbelief works. At some point I was actually surprised to recognize an actor from other movies, it just didn't occur to me that I was not watching a piece of real life. Leaving cheesiness aside, I highly recommend this one.