A warm-hearted g-british, g-family g-british, g-drama set in turn-of-the-century London, where three young girls come together as mammies and grow to be friends in London's Berkeley Square. Matty is a tough, East End girl, who has worked her way up the domestic ladder of London society's finest families. Spirited Hannah flees to London with her child after falling disastrously in love with the eldest son of a grand Yorkshire g-british, g-family. Generous, yet naïve, farm-girl Lydia becomes a nanny in a forward-thinking g-british, g-family light years from her own. Over the course of time, the three young nannies become enmeshed in each other's lives as they manage through unpredictable twists and turns of love, happiness and secrets in the posh world of Berkeley Square.