New England's favorite TV Cowboy, Rex Trailer, guest stars in the two-part season opener, “Return of the Legend.” Britt MacMasters and his father track outlaw Jeb Pickett after the Stagecoach hold up - A new band of deadly outlaws appears in the territory as Doc is seriously injured in an explosion - While in Chicago, Britt once again meets famed singer Jenny White - When a young lady is the sole survivor of an Indian attack on a raft traveling on the Powder, Britt, Dawes and Doc try to prevent another uprising by the Sioux - The railroad arrives in Clearmont, bringing one thousand workers and trouble. These and many more exciting adventures from the entire fourth season of Powder River! Episodes include: Return of the Legend, Part 1/ Return of the Legend, Part 2/ The Nitro Gang/ Jack Sherman Escapes/ Twilight/ In Chicago/ Revelations/ Ambush At Powder River/ The Shootin' Arm/ The Tomahawk Trail/ The River Pirates/ The Man In The Iron Mask/ The Railroad/ The Buffalo/ End Of Track.