With spring weather threatening to melt the rig site, a specialized team rushes to the Penn West site to crack open the underground rock so the crude oil can start flowing. But the big bosses still want to drill one last well, and Kelly and Cody push their crews hard to make it happen. Up north at the MGM site, John Williams and the truckers scramble to move the rig out before the ice roads disappear, but a sudden Arctic blizzard threatens to derail everything.