Medics intervene when Justin tries fruit known as the Little Apple of Death. A clash about fire sparks into a raging fight between Kerra, Na'im and Bulent. Andrew and Heather question Patrick's hunt for a saltwater croc. A team splinters into two groups.

Bulent struggles with uninvited guests and scrambles to protect his huge meat win. A water migration tests Na'im, Kerra and Justin's raft -- and a mysterious fever puts their challenge at risk. The groups join forces to push north for extraction.