Archaeologist Sigurd Svendsen has been obsessed with the history of Vikings’ Oseberg ship for many years. The only inscription found on the ship is written in runes and reads as follows: ‘Man knows little’. Sigurd is sure that the Oseberg ship is hiding the answer to the riddle of Ragnarok - the end of days in Norse mythology. When his friend Allan finds the same runes on the stone in the north of Norway, Sigurd believes it is a treasure map. Together they go on an expedition that brings them to a ‘neutral zone’ between Norway and Russia, which has been abandoned for decades. There Sigurd finds the true meaning of the runes that keep a terrible secret.