Mary Golding can't understand, even from a young age, why people have to fight. Why can't they just have one of her mom's biscuits and work it out over a cup of tea? But when her brother Peter dies in action on the front line in WW1, all her hope and enthusiasm turn to despair. 2 years go by and the war still goes on. Mary decides to become a nurse so she can help soldiers like her friends, Pa, and of course, Peter, don't have to die in pain or alone. Follow her as she fakes her age, and travels her feelings as she faces the trauma and constant paranoia of being a Grey Angel.