As they make their way deeper into the train, Curtis and his group encounter more and more obstacles. They're forced to fight off some of Wilford's security forces, and they begin to realize just how difficult their task will be.
The episode opens with Jack (Chris O'Dowd), the leader of the tail section, still reeling from the consequences of his actions in the previous episode. He tries to rally his fellow tailies, but they're increasingly frustrated and disillusioned with his leadership. snowpiercer s01e05 webrip