Nine veterans are marooned on a bug-infested island with no tools or maps; they must scavenge wreckage to help them survive; insect bites ravage all camps; a large predator stalks one team; Bulent secures fire and chases a protein score.

Bulent scores an armadillo with his bare hands, but Na'im struggles to process the win using a fan blade; Andrew and Heather try to make fire, but the only sparks come from their conflict; Candice's team repurposes debris to trap a protein source.

Ravaged by bugs, Heather must move camp, but with no map the grueling trek puts Andrew's challenge at risk; Bulent works to trap a wild pig, but his approach frustrates his team; Candice tries to turn the pelican carcass into a new food source.

Heather, Andrew and Patrick scavenge debris to make fire; Candice secures a protein win; Bulent and Na'im butt heads when their pig snare fails, and Kerra is caught in the middle; a survivalist is medically evacuated off the island.

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.

After an emotional reunion, Na'im vows to get Rachel to day 21; a group must migrate through a croc-infested swamp; Bulent finally comes nose-to-snout with the elusive pig he's been hunting; a survivalist is forced out of the challenge.