May 1945: the end of the Second World War in the Tyrolean Alps. SS man Anton has deserted and been shot. On the run from his unit, he swaps his SS uniform for that of a dead Wehrmacht soldier and discovers a lonely mountain hut. Hannah, a Jewish woman, is hiding here. She takes Anton in and tends to his wounds.
　　But there is great mistrust between the two. Together they cope with the harsh everyday life in the remote hut. They are looked after by 16-year-old peasant girl Charlotte, whose family pays Hannah not to betray them. And at night, they hear fighting between the German troops and Italian partisans. Over time, a cautious familiarity develops between Anton and Hannah - he, who has done terrible things in the war, she, who has lost her family and has been struggling with fear and loneliness up here in the mountains for months. They grow closer. Hannah finds out that Anton was no ordinary soldier. He was in the SS, a man of conviction, at least at first. Brutal truths come to light. The war is as good as over, but what kind of future awaits them?
　　Georg turns up at the hut: He's been looking for Anton, hunting him down. He was the one who shot Anton - his best friend. Georg is fighting a battle that has long been hopeless, driven by hatred and the will to destroy. And he also wants to kill Hannah. High in the mountains, the decision is made.
　　The Deserter is a story about war and guilt, but also about helpfulness and humanity.

　　四位驻伊美军士兵接到了回国的调令，然而，一次恐怖性炸弹袭击，改变了他们的命运。军用卡车司机凡妮莎（杰西卡•贝尔 Jessica Biel 饰）被炸成重伤，军医威尔（塞缪尔•杰克逊 Samuel L. Jackson 饰）负责救治，结果不幸截肢。贾马尔（50美分 50 Cent 饰）误杀了伊拉克妇女，从此存下心结。汤米（布莱恩•普莱斯列 Brian Presley 饰）亲眼目睹了战友阵亡，悲痛欲绝。四个人回国后，凡妮莎在校园做体育老师，但是配搭的假肢让她黯然神伤。威尔的妻子发现丈夫的情绪总是失控，而叛逆的儿子也经常顶撞父亲；贾马尔和汤米同时进行了心理诊疗小组，但是两人发生争执，分道扬镳，没想到再次见面却是生死一线……

　　苍山莽莽，云海茫茫。太阳透过茂密的树叶，将班驳的光点洒向山林，山林里一支猎枪对准了溪水边的一支狼。随着一支狼慢慢变成一群狼，猎枪后的田大倒吸一口凉气，又一次空手而归。自打小日本入侵以来，田大就领着媳妇翠儿和还在襁褓中的儿子，躲进这深山老林，以狩猎为生。但从进山林那天起，翠儿就没听田大放一枪，就连圈里的几只羊逐个被狼叼走，田大都没开一枪。就这样，日子在清苦却平静中一天天的过着。
　　一天，外出狩猎的田大从岩缝里救起一支小狼崽，等小狼崽的腿伤被田大完全治愈时，小狼崽已经跟田大一家建立了很深的感情。但在母狼的嚎叫和田大儿子乖娃的哭声中，小狼崽还是选择了狼群，恋恋不舍地消失在山林之中。不久，田大平静的狩猎生活被三名日军特种兵松信、小野、佐佐木的降落所打破。和田大一样遭殃的，还有小狼崽成了松信几个人的口中餐。
　　因为急于走出山林，田大一家被他们抓为“向导”。但在田大被迫去给松信找粮食时，失去狼崽的狼群不断向三个日本兵发起报复性袭击。松信差一点丧身狼口，小野被田大设法制服后，被狼撕了个七零八落。当田大发现自己的女人翠儿已经被松信糟蹋，并死在血泊中后，田大原本妥协、害怕的心理，被极度的愤怒所占据，不顾一切的向松信和佐佐木扑去。
　　与松信和佐佐木的较量，因为儿子乖娃在松信手里，田大不得不再一次妥协下来。在出山的路上经过一道山梁时，田大终于寻求到一次反抗的机会，而滚下山梁的乖娃则让田大义无返顾地扑向松信。关键时刻，狼群被乖娃的一声啼哭招来，松信终于葬身狼腹，狡猾的佐佐木也为自己失去人性的侵略付出了生命的代价。寂静的山林在喋血之后恢复了一片宁静，田大撤着嘶哑地声音呼喊着他的乖娃时，乖娃被狼群叼上山林保护起来，那一刻朝霞如火，山林泽金。