This 31st entry of the 66 films in the Hopalong Cassidy series marks the first of 35 consecutive appearances, in the remaining films of the series, of Scottish-born comedian Andy Clyde in the role of "California Carlson", although his introduction in this film is as "California Jack" Carlson and his credentials won`t bear much scrutiny. The film finds local officers in an outlaw-infested town in California helpless to cope with the situation and a citizens committee comes to Texas and appeals to the Texas Rangers for help in organizing the forces of law and order. Captain Andrews of the Rangers offers the assignment to Hopalong Cassidy and Lucky Jenkins, but Cassidy, whose period of service in the Rangers is almost over, refuses. The as-usual impetuous Lucky takes the job alone. While on patrol duty, Cassidy is following the trail of a large herd of rustled horses and discovers the hide-out of the Bruce Morgan gang.