What's the difference between friendship and marriage if you share everything except the name?

Chloé Morel, wife of world-famous musician Luc Morel. No one really knows her but everyone knows she exists. Nobody wants to be like her, yet everyone would do anything to be in her place.

In a flood of hate comments Cathy appears. A missing puzzle piece. An admirer turns into a loyal friend with whom she's willing to share everything: lipsticks, cigarettes, pills, her art, an obsession, a delusion. And, in the end, maybe even a man.