A notorious robber, Rhiannon (Vaughn Monroe) is fond of stealing from the wealthy and has a stash of gold hidden in the mountains. Eventually, Rhiannon makes an attempt at going straight, befriending Sheriff Jim Caradac (Ward Bond) and Dr. Jonathan Mark (Walter Brennan) and falling for the lovely Nan Morgan (Ella Raines), who works at the local saloon. Can Rhiannon, who is fond of singing a tune now and then, turn over a new leaf and give up his illegal activities?