It is 1969. London swings, men land on the moon, and thirteen-year-old Kim Tanner appears on Imogen's doorstep to announce she is her long-lost daughter.

Imogen wrote a bestseller about the baby she was forced to give away, so there have been many contenders, but Kim is special, and she is convinced. Kim and her dog Welly move in with the beautiful, bohemian Imogen and proceed to bring order to chaos. Then along comes pretty, appealing Sukie, also claiming to be Imogen's child. Kim is determined to prove she is Imogen's daughter but when the starts digging she unearths a very murky story...