Cmdr. Fitzjames - in the absence of Crozier, drying out his alcoholism - must manage decaying rations and an antsy crew.
Crozier's crew are deteriorating, both mentally and physically. Just like Hickey and his party, in much worse ways.
Crozier is taken back to Hickey's mutineer camp, where he must try to save himself and as many of his remaining men as possible.
Something appears on the ice when a crew scouts out leads. Hickey and Gibson are caught breaking rules. Crozier and Franklin butt heads.