A powerful true story revealing a remarkable relationship between a dying son - and a mother that refuses to let him go. At the age of 10, Deryn was diagnosed with Leukaemia. Then 18 months later he developed another rare cancer called Langerhans cell sarcoma. Only five other people in the world have it. He is the youngest of them all and the only person known to be fighting it alongside another cancer, making him one in seven billion. Told there was no hope of survival, after four years of intensive treatment, exhausted by his fight and with just days left to live, Deryn planned his own funeral. But Deryn's desperate mother, Callie, would not let him give in. Battling medical errors, impossible odds and years of hardship, as the cancer consumed his body and their world, they looked for answers. After making some startling discoveries and taking massive chances, something began to change... Would their lives as a family ever be the same again?
