Fourteen-year-old Amanda is a competitive gymnast, sleek-muscled and in perfect health.
Fifteen-year-old Dani was born with her heart on the wrong side of her body; she's been in and out of hospital all her life.
The two girls don't know each other - and never will.
Yet their lives are about to collide. Amanda suffers a haematoma - a blood clot - during a gymnastics competition, and dies.
The donation of her heart means renewed life for Dani and several other donor recipients.
A fascinating and unputdownable story on an important and topical issue.