一只半狼半犬的狼狗贝托，于19世纪末在阿拉斯加受到人们及爱斯基摩犬的排挤。不晓得自己属于何种族群的贝托，身边只有四位好朋友：美丽的爱斯基摩犬珍娜、聒噪却善良的企鹅波利斯、害羞可爱的北极熊木克及路克。虽然贝托的“杂种”身分与他们格格不入，但他的好友在意的并不是他的外型<br>系列之二：http://movie.douban.com/subject/1423003/<br>系列之三：http://movie.douban.com/subject/1422993/
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