The sun's influence diminishes and the ocean starts to freeze. The greatest seasonal change on our planet is underway. The ice grows at an extraordinary rate advancing two and a half miles a day. In a matter of weeks the continent effectively doubles in size. Life flees from Antarctica. But one creature is just arriving. Every winter emperor penguins leave the comfort of their ocean home and begin a remarkable journey. They head towards their breeding grounds almost 100 miles inland. Eventually the emperor penguins reach the place where they were hatched, an area sheltered by icebergs trapped in the frozen ocean. Here they will raise the next generation, but first each must find a mate. 太阳的热力在减退,海洋开始封冻,地球上反差最大的季节变化正在发生,冰层的面积以极快的速度增加,每天以四公里多的速度向前推进。动物纷纷开始离开此地,但有一种动物却刚刚到来。每到冬天,帝企鹅就会离开它们海上舒适的家,开始不平凡的旅行。它们要进入南极大陆,纵深约一百五十公里前往它们的繁殖地。最后帝企鹅到达了它们自己出生的地方,这里一片冰封,周围有冰山环绕,帝企鹅将在这里繁殖抚育下一代。但首先每只帝企鹅都要找到配偶。