一个孤独的小男孩独自搬进一栋破旧不堪的公寓楼，并与一文不名的漫画家邻居成为了朋友。

公元10世纪末期，世界各地出现了只做战争掠夺的最强民族·维京人。被讴歌为最强战士的儿子·托尔芬，自小便生活在战场上，并向往着梦幻大陆“文兰（VINLAND）”——
这是一个发生在激荡时代的，真正的战士物语。

Will Freeman is a good-looking, smooth-talking bachelor whose primary goal in life is avoiding any kind of responsibility. But when he invents an imaginary son in order to meet attractive single moms, Will gets a hilarious lesson about life from a bright, but hopelessly geeky 12-year-old named Marcus. Now, as Will struggles to teach Marcus the art of being cool, Marcus teaches Will that you're never too old to grow up.