The group is devastated when two critical survivalists leave the challenge. With just 10 days left before extraction, Jeff is forced to change his survival strategy but a medical emergency quickly has him on the brink of a tap out.

Medics closely monitor Jeff's high fever and prepare his evacuation. The others scramble for a five-mile extraction journey through shark-infested waters. A survivalist pushes too hard leading to a medical emergency on the open sea.