It's 1875 and London's East End heaves with children who work as prostitutes, hawkers, beggars and thieves. Constance rescues as many as she can, but there is only so much she and other charity workers can do. Then a solution is offered that sounds perfect - Canada, with its wide green plains, has farmers who need help, while their wives want housemaids. Shipping children to this land of plenty offers them a future far from the temptations of London's overcrowded streets. Widow Mary Trupper is wary, but the promise of good food and an education for her children is strong. Are the fields green? Is the food plentiful? For some, yes. For others, the harsh winters reflect the welcome.