Tales of the Riverbank tells the story of three friends - Hammy Hamster, Roderick Rat and GP the Guinea Pig - who, having swept down the river in a violent storm, embark on an epic journey in search of their lost homes. Their journey, full of comic incident and dramatic danger, becomes even more precarious when they discover that the whole riverbank is threatened by a waffle, Marmalade and Doughnut (WMD) factory which, owned by the evil Fat Cats, is polluting the countryside with increasingly dangerous emissions...the Big Dirt!