Wales, 1908. Still grieving the tragic death of her father and deserted by her stepmother, Nellie, Rhiannon Hughes finds herself abandoned and alone. Unable to trust flighty Nellie, Rhiannon and her younger stepsister, Mair, have always relied on each other. But with no money and no one to turn to, Rhiannon must take Mair from the only home they have ever known in the Welsh valleys and head for Cardiff. Their one spark of hope is her aunt, a popular music hall star. Rhiannon is dazzled by this glamourous and exciting new world and by the handsome young master of ceremonies, Gus Davenport. Then Nellie unexpectedly returns and it all comes crashing down. Mair is lured into Cardiff's sleazy underworld. How will Rhiannon choose between following her dreams and keeping her promise to Mair, who needs her now more than ever?