Ed Stafford challenges ultra-fit ex-Marine and ropes expert Aldo Kane to a race across the tangled wilds of Borneo's crocodile-infested mangrove swamps.

Ed flies to Kazakhstan to take on ex-South Korean special forces soldier KhenRhee, where he encounters life-threatening navigation errors.

Ed Stafford heads to the deadly Gobi desert with endurance athlete Matt Graham, where the pair face sand storms and extreme dehydration.

Ed races through northern Thailand against ex-military survival legend EJ Snyder, but the competition almost takes a fatal turn when one of them tumbles off a cliff.

Ed races primitive skills expert Cat Bigney across the deadly island paradise of Palau in the South Pacific, home to sharks and salt water crocodile.

Ed races Royal Air Force survival instructor John Hudson across the top of the monster mountains of the Himalayas. Monsoon rains and lethal bears are among its dangers.

Ed faces his old bushcraft teacher, Will Lord, in Bashan, central China. Both without a knife, they must navigate huge cliffs and Asia's largest bamboo forest.

Ed faces former French Foreign Legion desert specialist, Xinlei Wu, in the Aksai Desert of north-west China. They encounter huge sand dunes and rock-valley mazes.

Ed takes on the 'Kiwi bushman', Josh James, in the Three Parallel Rivers plateau of Yunnan Province. Josh draws on his Maori-heritage to make fire in the mountains.

Ed takes on ex-PSYOPS marine and real-life ninja, Hakim Isler, in the Zoige Marshes of Sichuan Province. The unforgiving wetland tests their willpower to the max.

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