加拿大绿宝石国家公园生活着两群完全不相来往的两群狼，其中凯特（海顿·潘妮蒂尔 Hayden Panettiere 配音）是西部狼群首领的女儿，对她来说原则、职责和责任重于一切；亨弗雷（贾斯汀·朗 Justin Long 配音）则来自另一个狼群，成天嘻嘻哈哈，无忧无虑，是个享受派。凯特即将嫁给东部狼群首领的儿子加斯（克里斯·卡马克 Chris Carmack 配音），并不是为了爱情，而是为了阻止两只狼群之间即将爆发的一场可怕战争。世事难料，就在婚礼当天，凯特和亨弗雷被森林管理员抓走送去了爱达荷州的“锯齿”国家公园，为了避免组群见不必要的战争，俩人逃离出来，他们能在战争爆发前赶回去，化解矛盾吗…… 　　本片曾入围了第83届奥斯卡奖最佳长篇动画奖。In Jasper National Park, the wolves, Kate and Humphrey, have known each other since puppyhood, but they are on the oppose ends of the Western Pack's social structure with Kate as the energetic Alpha daughter of the pack leader and Humphrey being the good humoured Omega. That social structure forces Kate to accept an arranged marriage with Garth of the Eastern Pack to unite the packs for peace, regardless of Humphrey's hopeless attraction for her. Before that union can occur, Kate and Humphrey are captured by the park's rangers and sent to an Idaho park as part of a wolf repopulation project. Mindful of her duties, Kate is determined to return to Jasper and Humphrey offers to help with the assistance of two odd geese. However, as this disparate pair struggle through the dangers to get home, a growing mutual appreciation of their talents and then a deeper love threatens to disastrously complicate everything if they make it back.