Willy Moran, a drunk, is hired by a wagon as a driver. He is an army buddy of the Major, but is used as a fall guy by a member of the train who wants to rob it. When the battle starts, Willy uses his army skills to turn the battle.
The train cannot get supplies after a member kills the son of the man who owns most of St. Joseph in self-defense. He escapes with the help of Flint but when he learns the train is still being denied supplies he returns to face hanging.
John Cameron, from Philadelphia, heads west with his wife to start a new life. Her flirtatious ways may get the better of her when three trappers come into camp offering fresh buffalo and thinking she might be more available than she is.
Ruth Owens remarries and is moving west with her new husband. When her brother comes looking for her, he stirs up trouble for her about her past and himself because he just killed a man.
Les Rand, just released from prison for murder, goes back home to kill the man he held responsible; his father, the doctor. Meanwhile, Flint is there to fetch the doctor to help someone injured. Les vows that no one will stand in his way.
A pacifist since the war, Nels Stack stands up to any man prejudiced against another. When his own beliefs are tested in the face of an impending Indian attack against the wagon train, he has to decide who he is going to defend.
Emily Rossiter had a young daughter to care for. She met and married someone she felt she could trust. When she found out this was misplaced, getting the daughter away from him and into a better life becomes her main goal.
When the train picks up an abandoned drunk on the trail, he exposes John Darro to be the reviled coward John Thurman who abandoned a previous train during a massacre. Darro's young son Tommy is unable to cope with the truth.
Lieutenant Avery has a mission. Deliver a peace treaty and the chief's daughter. But he has a secret vendetta that may jeopardize everyone's hope for peace.
Mary Halstead is in search of a son she gave up a long time ago. With months to live, she comes west on the trail of someone who could be her son, but he may also turn out to be a notorious outlaw.
The wagon train stops in a newly built town to get water they had always been able to get before for free. Wanting money now, and at a steep price, has the Major upset. Sending Flint also uncovers a wife of a passenger thought dead.
Riley Gratton has always drifted from here to there, a smooth tongue getting him whatever he needed. When he tries to do the same with some folks on the Major's wagon train, what comes next may be the least of his worries.
When a new officer and troops kill an Indian brave and the post commander's drunken bored wife insults the Chief, Flint is forced to act as a neutral agent between the Army and Indians and save the wagon train.
A head strong Julie Gage is determined to ride her wagon to California. Losing her pa to fever, many suitors step up to help but she'll have none of it until one comes down with fever himself and she's the only one who will tend to him.
Mortally wounded in a buffalo stampede, Cliff Grundy's friend Flint stays when the wagon train leaves. Manson says he will help but his reasons for staying become clear as Cliff keeps saying he has a goldmine somewhere and he's recovering.