Tensions rise between Fred and the Clayton Brothers when a borrowed machine comes back broken. Parker's wash plant Big Red turns into a problem child. Dave's crew struggles to get through the rocky Three Amigos paydirt.

Parker gets down to paydirt at the Wolf Cut in Alaska but disaster strikes when the crew hits an old mine shaft. Dave goes deeper in search of his last gold. A mistake on Tony's crew sends a $500,000 wash plant crashing to the ground.