一艘苏联潜艇因指挥官摆乌龙而在美国东北部的新英格兰搁浅。亚伦艾金奉命率领一小队弟兄偷偷登陆取一艘汽艇,他们自以为行动神不知鬼不觉,但整个小镇的美国人却以为是苏俄军队的入侵而引起了一场混乱……In the Cold War, when the captain of a Russian submarine comes too close to the Gloucester Island in Massachusetts to give a look at America, the submarine gets stranded. A nine-man team commanded by Lieutenant Rozanov goes onshore to search a motor boat to release the submarine and arrives at the summer house of the New Yorker writer Walt Whittaker that is spending the weekend with his family in Gloucester. When he realizes that they are Russians, he believes that it is an invasion. Soon the information leaks, leading hysteria and paranoia along the inhabitants of the small village.