It is a crucial moment in Britain's history: Prince Charles Edward Stuart's attempt to regain his grandfather's crown from the Hanoverian King George is in the balance. Jeannie Main is warned that she will make a king and break a king. But how could a wee fisher lass do such a thing? What will bring her four times into the shadow of the gibbet? And why should she risk her life by riding the Kelpie, the most dangerous monster in all Scotland?