自然主义者兼探险家Steve Backshall继续攀山涉水，深入无人之地，展开奇妙的探险之旅。在新一辑的《无极行》系列中，他伙拍经验丰富的专家团队，走到墨西哥、俄罗斯、沙地阿拉伯与吉尔吉斯等的激流秘地，探索未知世界。在这个瞬息万变的星球上，他以行动为濒危的野生动物，寻找新希望。

Explorer and naturalist Steve Backshall has dedicated his life to exploring some of the most remote locations on earth and venturing into places never before seen by human eyes, but he has only scratched the surface. Expedition series 2 sees Steve venture even deeper into the unknown to shine a light on unexplored corners of the planet. On a mission to discover fresh insights that could help to secure a future for the world’s wildlife, Steve and his hand-picked team of experts dive with sharks in Mexico’s Eastern Pacific, head deep into Africa’s unexplored jungles in search of apes, paddle the white-water of the Russian Far East into the heart of brown bear territory, abseil into the depths of Saudi Arabia’s ancient deserts to explore an unmapped, uncharted volcanic underworld and climb the Djangart mountains of Kyrgyzstan in search of endangered snow leopards. The ambition is big and – on this rapidly changing planet – the stakes have never been higher.