Hiro's Curse returns for Big Al; unstable ground shuts down Chris and Nika.

Chris risks his season on a new cut; Andy tries to manage the mine alone while Ed and Riley go hunting.

Desperate, Big Al pushes Hiro to his limit; Chris looks to salvage his season; P.J. and Andy's camp experiences a mini-revolt.

PJ and Andy’s main investor issues an ultimatum; Chris uncovers a clue that could lead to a huge payout; and Ed and Riley’s season could end early.

Al faces breakdowns that that threaten his profit; desperate, P.J. and Andy start a night shift; Ed and Riley make a final effort to prove themselves.