When it comes time to bid on the ownership of the Lonesome Dove, Mosby is shocked when he's outbid by Amanda Carpenter, a newcomer in town. Unfortunately, Amanda comes with a past of her own.

In order to 'prove himself' to Halcyon mines, Mosby ignores safety regulations in the Curtis Wells mine to make a profit. When an explosion results in numerous injuries and some fatalities, Clay tries to shift the blame, even though he feels guilty.