The evening before Christmas eve. Vilde is hanging out with her gang at the central station, when she gets to know her mother has been in an accident. She is forced to contact her biological father, but wants to run away to Tokyo.

当考古学家西格德对北欧神话的世界末日无法释怀的时候，他毅然决定与他两位同事带着自己的两个小孩开始了探索旅程，他们来到了芬兰马克，挪威的北部与苏联交界处的无人区。当他们解开真相时才发现，原来石碑符文并不是所想的那样，而是一个做梦也想不到的秘密。

　　 一道光芒海中闪过，全世界开始出现一些过去穿越来的人，从石器时代，到19世纪……这些“过来人”无法回去，只能在如今生存下来，并不受欢迎。几年后，一个维京时代穿来的女子当了警察，她和另一人组队，开始调查一个“过来人”被谋杀案件，逐渐引出大阴谋，和他们为何穿越的秘密。

Revolving around the life of un-produced screenwriter Barnum Nilsen, The Half Brother is a dramatic family saga that offers an historical parable of 20th century Europe. On V Day, May 1945, as a continent emerges from war, Barnum’s mother Vera is raped in her attic in Oslo by an unknown man, leading to the birth of Barnum’s half brother, Fred. When Barnum is born five years later, to the man that Vera has since met and married, the Nilsen family, like Europe, is already splitting in two. Growing up together during the Cold War – Barnum with his father, Fred searching for his – the half brothers become estranged and Fred eventually disappears. At the film festival in Berlin in 1990, as the Wall is still coming down, Barnum learns that Fred has returned. Finally, as the true identity of Fred’s father comes to light, the two half brothers may once again be reunited.