July 1914. Britain is in turmoil as WW1 begins to change the world. While the young men disappear off to foreign battlefields, the women left at home throw themselves into jobs meant for the boys. Hiding her privileged background and her suffragette past, Constance Copeland signs up to be a Clippie on the trams in Staffordshire, despite her parents' disapproval. Constance, known as Connie, soon makes fast friends with lively fellow Clippies, Betty and Jean, as well as growing closer to the charming, gentle Inspector Robert Caldwell. But Connie is haunted by another secret; and if it comes out, it could destroy her new life.