After the gruesome events on Caprini, Sharp and his elite team of tough, witty and trigger happy space Marines must now head out to the icy planet Mezzo to investigate further Ma'har activities. What they will encounter will defy their imaginations as t
蕾普莉（西格魚婦?弗 Sigourney Weaver 飾）是首探險(xiǎn)任務(wù)詞綜異形后的唯生還者，她直冬眠直到救援隊(duì)救回球。當(dāng)她左傳眼睛后，才現(xiàn)自己已經(jīng)眠了57年！\r期間，人類已經(jīng)服山居了異形所在星球。蕾普知道后，猩猩向當(dāng)局報(bào)局星球上異形情況，但卻當(dāng)局認(rèn)為要精神不正居暨要么謊話連。蕾普莉見局對她的說不予理睬，決心不再歸山和異形有關(guān)任何事。\r果不其然，那個異形三身的那個星球定居的人忽和地球中斷聯(lián)系。這時局才注意對于普莉之前匯的情況，決派出軍隊(duì)去救。蕾普莉說服參與洹山行動。\r又一場腥風(fēng)血的戰(zhàn)斗展開！