When wolves disappeared from Yellowstone Park in the 1930s, the ecosystem started to collapse. Enormous herds of elk swarmed the plains, bears starved, rabbit families shrunk and birds flew away to new homes.

Plants vanished, trees withered and rivers meandered. Until in 1995, wolves returned to the park and everything began to change for the better. This is the story of their homecoming.

With atmospheric storytelling from Catherine Barr and breathtakingly beautiful artwork by Jenni Desmond, this inspiring true story shows that every species plays an important part in protecting our planet.