The son of legendary gunman Frank Morgan, Conrad Browning goes by the name Kid Morgan -- the Loner -- and has forged a growing reputation of his own. But in the midst of a fight for his life, the Kid discovered that he too was a father -- of twins he'd never met. His ex-fiancée, Pamela Tarleton, had hidden his children from him, but she's dead now so he won't be getting any answers from her. The Kid heads back to Boston where the children were born...

"Using an old cannon that once belonged to Napoleon's army, an outlaw gang has been bringing trains to a screeching halt and then robbing them. Now Edward Sheffield, one of the owners of the railroad, wants to hire Kid Morgan, the man known as The Loner, to wipe the gang off the map. Morgan isn't interested--even when Sheffield's hot-blooded wife tries to seduce him into going after the gang's leader, Gideon Black, a renegade ex-colonel-turned-outlaw....