考察隊繼續留守北極周邊地區，忍受著北極嚴冬的極端環境。他們在全日24小時漆黑之中工作，用人造衛星監察海冰情況，及研究融冰為何會自行釋放溫室氣體，對環境造成破壞。隨著太陽回到北極圈，地形也起了變化，危機四伏；冰塊變薄、碎裂，北極熊不斷來訪，加上全球疫症的威脅……意志堅定的考察隊決定作戰到最後一刻。

電視版本：雙語廣播（粵語／英語）

The team endures through the extremes of Arctic winter close to the North Pole. Through the 24-hour darkness they work to revolutionise our ability to monitor sea ice using satellites, and they explore how the melting ice is releasing its own damaging greenhouse gases. As the sun returns to the Arctic, the landscape is transformed. Facing perilous thinning and cracking ice, constant polar bear visits, and the threat of a global pandemic, the team are determined to explore the Arctic ice right until the last possible moment.

TV Version: Bilingual Broadcast (Cantonese/English)

馬賽克考察隊出發前往北極，他們的首個任務是在北極附近、北極圈正中間物色一片合適的漂移海冰，在上面建立研究基地，過程困難重重。旅程頭幾個星期，除了天氣嚴寒、冰塊碎裂、北極熊和暴風雨等挑戰外，他們還要面對北極嚴冬的24小時漆黑永夜。前所未見的北極嚴冬生活和海洋暖化的鐵證，將呈現觀眾眼前。

電視版本：雙語廣播（粵語／英語）

The intrepid team of the MOSAiC expedition set off into the Arctic. Their first task, to find a suitable patch of drifting sea ice that will carry them and their research base, close to the North Pole and right across the Arctic. But it won’t be easy. In this first few weeks of their mission, they’ll face brutal cold, cracking ice, hungry polar bears, violent storms and the 24-hour-darkness of Arctic winter. They reveal more about life in Arctic winter than ever before possible and disturbing evidence of our warming oceans.

TV Version: Bilingual Broadcast (Cantonese/English)