When a woman's husband disappears during a kayaking trip, everyone assumes that he drowned. When she catches a glimpse of a man who looks exactly like him, it sets off a chain of events that unravels everything she thought she knew about him.

　　第二次世界大战中，根据英国盟军埃森·豪威尔将军策划的“霸王”行动，为所有同盟军争取诺曼底登陆时间成为关键。1944年6月6日，诺曼底登陆拉开序幕。为了夺取海滩制高点霍克角山脊，压制德国布防在犹他和奥马哈海岸的重型火炮及机枪火力点，并销毁敌军的主力大炮，美军陆军中校詹姆斯·厄尔·鲁德尔率领第二游骑兵部队“猛犬连”成为这项任…