Daisy Ruffles is a fourteen-year-old girl with untameable red hair and an extraordinary memory condition called hyperthymesia, meaning she remembers everything she sees. When Triple C, the most famous racehorse in the country, is stolen from her father's stable yard just five days before the Grand National, no one, not even Daisy - who knows Triple C better than anyone - has answers. As TV crews arrive, fear quickly spreads through the town and the police investigation hits a dead end. Daisy has her friends, her super-memory and five days to uncover the truth and save Triple C...