Nine ''Naked and Afraid'' veterans attempt to survive the deadly jungles of Ecuador's Amazon Basin for 40 days and 40 nights.

The seven remaining survivalists enter the second week of their 40-day challenge in the bug-infested Amazon Jungle.

Lacey's night-fishing plan yields a boost in strength and team morale; lack of food and sleep at Camp Laguna Negra makes Shannon spiral downward; Matt and Russell take to the water and score another huge protein win.

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Still mourning the loss of their chief provider, the remaining five survivalists endure yet another shocking development when they learn they are not alone in the jungles of the Amazon and are given an opportunity to join forces with others.

Days after the arrival of a new team member, division among the remaining six survivalists deepens as Russell leads the men on a risky two-day hunting expedition.

Four weeks into the 40-day Amazon challenge, a unhappy two-day storm descends on the jungle.

After Russell's shocking decision to quit the Amazon challenge, the remaining survivalists struggle to regroup in time for a brutal two-day 15-mile water extraction journey. Electric eels, anaconda & caiman all pose threats in this jam-packed finale.

The 10 survivalists reunite for the first time since leaving the Amazon. Through roundtable discussion, new interviews, and never-before-seen footage, they offer unique insight into the highs and lows of their 40-day challenge.

Veterans of all three seasons of Naked and Afraid XL come together for the first time to compare their experiences and share new insight into what makes this epic 40-day survival challenge the ultimate test of skill and human endurance.