Poppy and Annalise are driven mad by mums enjoying special privileges at work while they pick up the slack. Setting up a Facebook group to vent about smug mummies is just a healthy outlet - right? But as their new group's membership soars, the frustrated women start confronting mums in the real world. Cafes become battlegrounds, playgrounds become warzones and offices have never been more divided. A rivalry that was once harmless fun is about to spiral out of Poppy and Annalise's control. Because one of their members is a wolf in sheep's clothing. And she has an agenda of her own ...