At the age of fourteen, happy-go-lucky Polly Perkins faces untold sadness when her beloved father is diagnosed with tuberculosis. As Tommy's stay in hospital turns from weeks into months, Polly's mother, Ada, becomes increasingly anxious as to how she will make ends meet. In an attempt to help out, Polly takes a job as a flowerseller, and when she sells a buttonhole to Charles Denholme, a member of the Liverpool gentry, she sets in motion a chain of events that changes her life forever...