Annabel Buchanan has it all. A privileged life. Pots of cash. Looks and manners born of generations of fabulous breeding. At least, that's what she likes people to think. But Annabel's carefully created image is about to come crashing down. With her beloved daughter Izzy in need of a kidney transplant, Annabel is desperate to find a suitable donor. That's how she comes to admit that before Annabel Buchanan there was Daisy Benson, given up for adoption by her teenage mum and dad. Hoping her biological family will be able to help, Annabel traces the Bensons and is horrified by the embarrassing, chavvy bunch she discovers. They're definitely not her kind of people. And she is equally baffling to them. But as Christmas approaches and Izzy's situation brings the Benson and the Buchanan families closer, will Annabel discover at last that blood is thicker than water?