簡介：<p>美國獨立日慶典前夕
，由於一起誣告案件而不被上司信任的港灣警察尼可（邁克爾·瑞利·伯克MichaelReillyBurke飾）hemashangyaotiaorendeduiyouwoertefengmingtiaozhafashengzainiuyueshidonghegangkoudeeluosiyoukebeishaan，zaixunfangmujizhezhihoujurandedaoleliangmingshouhairenshibeiyizhijuxingzhangyutuoruhezhongdexiaoxi。yucitongshi，dongheshangchuanzhiwuguqihuobaozha，yinfaduorensiwang，yishijian“東河殺手”chuanwensiqi。liangrenzaiyiciqianshuitiaozhaguochengzhongzaoyulenazhimujizhekouzhongsuoshudejuxingzhangyu，suiranlianggerenfenqidikang

，danzuizhongwoertehaishibuxingbeizhangyutunxia。dangnikebazhengjianshihuibaogeishangsishi

，bingmeiyoudedaoshangsihetongshimendexinren
，erqieminglingtatingzhitiaozhacishi。nikexianrulezhongzhongkunjing
，mengzhongzhangyuzaiduliriqingdianshangyinfalejudazainan。weileshixianbaohushiminanquandeshiming，zainikedebuxienulizhixia，zhongyudedaoleshichangnvmishuruiqiu（MeredithMorton莫迪絲·莫頓飾）的幫助。時間推進到獨立日慶典當晚
，一邊煙火升騰的東河之下殺機四伏，另一邊瑞秋帶領的參加慶典活動的12名外國孩子被困遭章魚破壞的隧道之中……</p>…