An American family fulfils their dream of returning to their roots after inheriting a remote cabin in the mountains of Norway. However, they are in for a big surprise. An elf with a nasty temper lives in the house’s barn. When the family…

　　莱昂内尔爵士（休·杰克曼 Hugh Jackman 配音）是一名怪物调查员，为了获得探险精英的认可，他将自己的生死置之度外，为了寻找未被人类发现的怪物跋山涉水，远渡重洋，发誓要将自己探险的足迹遍布整个世界。某日，雷昂内尔爵士收到了一封匿名信，信中声称，在美国太平洋西北地区发现了一只罕见的，体型巨大的长毛怪。如获至宝的莱昂内尔爵士…