Hopalong Cassidy is the creation of Clarence E. Mulford. As the subject of fifty-four films, a classic television show, radio program, comic books, and even toys, Cassidy was the true fictional hero of his time, preceding Superman and Luke Skywalker. When Hopalong Cassidy's hired gun, Johnny Nelson, left Bar-20 searching for even greater adventure and joined the CL Ranch, he found more than he bargained for. He found a hidden valley between Twin Buttes with over two hundred head of CL cattle rebranded OE. He found a gang of rustlers out to steal the rest of CL's beef. He found the country's fastest gunfighter looking to cut him down.