Will tragedy tear them apart - once and for all? It's 1966 and in Liverpool two sisters are about to have their lives turned upside down. Sisters Carol and Jackie haven't had the easiest of childhoods, but as they grow up and begin their own lives both hope for happier times ahead. Stylish Carol works in Lewis's department store, while Jackie dreams of drama school, and a career on the stage. But the sisters are heartbroken when they discover they have been dating the same man, and an unexpected pregnancy causes a rift between them. Parents Dora and Joe must overcome their past hurts and help their daughters, despite the meddling of Joe's second wife Ivy. As the sisters' troubles spiral and difficult decisions must be made, can the family pull together - or will Jackie and Carol's sisterly bond be destroyed forever?