Lillebror moves with Knerten and his family to the western part of Norway, but dreams of even bigger expeditions, like going to the North Pole.

德国记者凯瑟琳娜·瓦格纳回到寒冷的圣彼得堡,为了带她八岁的儿子尼古拉去看望她已过世的丈夫,尼古拉的父亲,他是名俄国记者,在几个月前自杀身亡了. 但是这次旅途成为了这位母亲的噩梦,尼古拉在错综复杂的圣彼得堡地铁里突然不见了。在她…