Season four picks up in a post-apocalyptic future where a road warrior and his warlord pal face the most dystopian nightmare of all: settling down in the suburbs. Together, they navigate the existential horrors of married life and small-town living, all under the dubious guidance of a wealthy junk trader.

In 1844, an idealistic small-town preacher teams up with a wanted outlaw and an adventurous & liberated prairie wife to lead a wagon train west on the Oregon Trail across an American landscape which, much like today, is fraught with both promise and peril.

Tommy has lost his job, his love and his life. He lives in a small apartment above the Trees Lounge, a bar which he frequents along with a few other regulars without lives. He gets a job driving an ice cream truck and ends up getting involved with the seventeen-year-old niece of his ex-girlfriend. This gets him into serious trouble with her father.