自然主義者兼探險家Steve Backshall繼續攀山涉水，深入無人之地，展開奇妙的探險之旅。在新一輯的《無極行》系列中，他夥拍經驗豐富的專家團隊，走到墨西哥、俄羅斯、沙地阿拉伯與吉爾吉斯等的激流秘地，探索未知世界。在這個瞬息萬變的星球上，他以行動為瀕危的野生動物，尋找新希望。

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.