One ordinary Tuesday, Katie finds herself catapulted into a parent's worst nightmare when a precautionary blood test reveals her five-year-old son Josh has leukaemia. The school run is diverted to the hospital emergency department, and she enters a parallel universe where chemo drips and hair loss are the norm, and even touching the supermarket trolley is a threat to Josh's life. With two more little boys and a husband with a spinal cord injury,...