A high school slacker commits a shocking act and proceeds to let his friends in on the secret. However, the friends' reaction is almost as ambiguous and perplexing as the crime itself.

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.