Three sisters are growing up in 1920s Bermondsey - the larder of London - with its bustling docks, its spice mill, tannery and factories. Southwells jam factory is where many of the girls work. And Milly Colman knows she's lucky. At Southwells she can have a laugh with her mates. She's quick and strong and never misses a day's work. She needs to be. Because at homes things are very different. The Colman household is ruled by the tyrannical rages of the old man - her father. Often Milly feels she is the only thing protecting her mother and younger sisters from his murderous violence. At least autumn hop-picking in Kent gives all the Colman women a heavenly respite. But it is here, on one golden September night, that Milly makes the mistake of her life and finds her courage and strength tested as never before.