Sometimes, all you can do is run ... When Mark Stamp fires an air rifle through the window of his father's shed, he's terified he may have damaged something. But what he discovers is far worse. Peering through the broken window, he sees something so horrifying that he has to run for his life. His older sister Ruby may not officially be old enough to drive, but she can handle their father's van, and Mark, Ruby and the baby set off on a hair-raising journey across country, fleeing their violent, one-legged father - who is in hot pursuit and wants them back, at any cost.