When a chicken pushes a small book towards Andrew on his way to school one morning and won't leave him alone until he picks it up, Andrew's friend Gemma finds it hard to believe. But when the two children start to read the contents of the book The True Story of Harrowing Farm they find themselves deeply moved by the chicken's tale. And if chickens have never moved you before, prepare to shed some tears now because this chicken is special. She is risking what is left of her life by flying frillions of miles in a spaceship to try and save us humans from a terrible fate.