"Suddenly, in front of my eyes, I saw poor little Walt plucked off the ground by his knapsack and disappear into the black mass of crows above. I was obviously too heavy but had a nasty time fighting my way to the big willow tree, I stumbled under its welcoming branches and lay there gasping for air."Two young kittens, Polly and Anna, embark on an exciting expedition of discovery. With Polly always on the lookout for adventure, will Anna, with the help of the barn patrol, be able to find the big river whilst keeping everybody out of mischief? Little does she know, the gang are about to stumble upon a secret that seems too big to believe...