Living in Paris with her partner, the workaholic Mr Frog, and their adorable toddler, Tadpole, Catherine decides to alleviate the boredom of her metro-boulot-dodo routine by starting a blog under the name of Petite Anglaise. As she lays herself bare about the confines of her stagnant relationship with Mr Frog, about Paris life and about the wonder and pain that comes with being a mother, she finds a new purpose to her day. As Petite Anglaise, Catherine regains her confidence and makes internet friends, including one charismatic and single Englishman who lives in Brittany, James. And after meeting James one evening in a bar, Catherine feels she has regained her ability to fall in love, too.

Petite Anglaise weaves together many strands which have already struck a chord with the thousands of readers who love her blog: a "fish out of water" perspective of Paris life, the raw emotional drama of a whirlwind, adulterous romance and an honest appreciation of the hardships of single motherhood.