While Simon and the show's cast haven't officially revealed if this season is based on a piece of literature, it's pretty safe to assume that Oregon Trail will be based largely on the historical movement that happened in 1844.
The original Oregon Trail was a path spanning more than 2,000 miles that connected the Missouri River to Oregon. More than 400,000 people used the trail to migrate from one side of America in a 40-year time span.
While Season 1 was set in Heaven and Season 2 was set in the Middle Ages, Oregon Trail gets an Old West makeover. Daniel Radcliffe returns to the title, this time as Reverend Ezekiel Brown, a local preacher who tries to convince the people of his town to follow him on the trail.
Steve Buscemi also returns to Miracle Workers, this time playing an outlaw by the name of Benny the Teen.
Season 3 premieres on July 13 at 10:30 p.m. EST on TBS.