Joe loves his spaniel, Buster. They are best of friends. But when war breaks out, Joe realises that Buster, like thousands of other household pets, is in danger. The danger comes not from German bombs, but from the adults: the government; Joe’s teacher; and his own mum.
Horrified by what he realises is happening around him, Joe begins a desperate race to save his best friend, Buster. When he bumps into an old, blind, ex-soldier named William, and his guide-dog, Major, new friendships are formed. Perhaps, all is not lost after all.