A serious leg injury puts Matt's challenge in jeopardy. During a dangerous white-water migration, the survivalists and their rafts are battered. Tempers flare, and Gary squares off with Matt and Waz. New camp dynamics shake up the competition.

Two bitter rivals go head-to-head in a multi-step water and bushcraft elimination. Steven uses his tracking skills and out-strategizes Jeff to secure a critical cache. Gary forages a huge protein score. One survivalist is eliminated from the competition.