As a man used to getting his own way Clark tries throwing his weight around with John McIntire who tells him who runs the Wagon Train in no uncertain terms. As for McCallion and family, they're a dirt poor bunch whose bad outfit and inability to handle same may hold up the Wagon Train.
Giving the title role of Clark's character the last name of Gatsby was no accident. F. Scott Fitzgerald's more famous Gatsby was definitely a man of pretensions as his Clark's character, just different kinds of pretensions. As for McCallion and Brando, they also face a crisis during the episode and find they have more in common than you would originally think.
I thoroughly enjoyed this episode and the stellar performances given by the whole ensemble. The story is a wonderful parable about values both real and misplaced.