Its 1931 & eighteen-year-old Greta is working in a laundry in Liverpool where she lives with her widowed mother & thirteen-year-old brother Kenny. When a scruffy black & white collie follows Greta home one day Kenny wants to keep the animal but they cant afford to feed him. & so Greta tracks down the owner: Mungo Masters a wealthy man who runs funfairs in three towns. Mungo falls for Greta though hes her mothers age & doesnt bother to tell her that hes married already. When Mungo gives Greta & Kenny jobs at one of his fairs it seems life is looking up. But Mungo is not good news...