雷•费瑞尔（汤姆•克鲁斯 Tom Cruise 饰）和妻子离婚了，一儿一女都跟母亲生活——因为他的的贪玩懒散，疏忽责任，这个家庭才如此支离破碎。一场外星人入侵的灾难却让他们重新建立起亲密的的关系。...

At Los Alamos, New Mexico, the maximum-security "atomic city" of U.S. nuclear-weapons research, top atomic scientist Frank Addison has a normal, middle-American life with his wife and son......