During their journey to the Pole of Inaccessibility (POI), the remotest point of the Antarctic, the expedition of six men, led by Captain Choi Do-hyung, discovers a Diary that was left behind by a United Kingdom expedition 80 years earlier. The journal was remarkably preserved in a box in the snow and Kim Min-jae, another member of the expedition, gets the job of examining it. It turns out that the two expeditions shared the same goal and soon other strange similarities between them start to show up. Will they make it to their destination before the sun goes down for the Antarctic winter?