As the Great War engulfs Europe 21-year-old Ruby Archer decides to 'do her bit' at an East End munitions factory. The work is dangerous relentless - and deafening - but the camaraderie of the other girls carries her through. But wartime is hard for everyone and Ruby cannot ignore the sick and injured animals scavenging at the factory and on the local streets. She takes in injured terrier Mac and rescues a stray kitten Tess but when all the cats mysteriously disappear from the factory she knows she needs to do more. With the help of her friends Ruby plans to open a weekly animal hospital. But very soon opposition closes in; everyone from her family to the local vets seem to be against the idea. Can Ruby and her new friends pull together to make her hospital dream come true?
