Sadie Roper returns to London, determined to pick up the pieces of her shattered life. You need to get your daughter into a prestigious school and regain your brilliant career as a criminal lawyer. But things don't go quite as planned. The school isn't very welcoming to newcomers, her daughter won't make any friends, and the other mothers compete with each other as fiercely as their children. But the situation changes when Sadie begins working on a high-profile case. Julia, the queen of school moms, befriends Sadie and draws her into the heart of a world where she has never been before. Things soon start to look up for Sadie, but does she see the truth? Sadie keeps her friends close, but doesn't know that her enemies are even closer...