艾倫·薛弗是美國特種部隊小組長，奉命率隊前往中美洲叢林執行秘密救援任務並蒐集情報。在任務完成時，他們俘虜了一名女性，隨後啟程向集合地點前進。途中遭遇不明敵人侵襲，小組成員接連被殺，僅剩艾倫與女戰俘兩人。 艾倫在跌落泥水池後，終於發現對手是身着可隱形盔甲的外星戰士（即鐵血戰士），而且無法「看到」全身沾滿泥漿的自己。艾倫利用地形地物佈置陷阱，歷經許多艱險後，終於逃過了鐵血戰士的微型炸彈，最終被美軍救起，返回美國。
A college freshman returns to Los Angeles for Christmas at his ex-girlfriend's request, but discovers that his former best friend has an out-of-control drug habit.
Federal agent Alexandra Barnes believes that Catherine Petersen is a serial killer who marries rich men and then murders them for their money. But since Catherine is seemingly a master of disguise and has multiple identities, Alexandra can't prove anything with conventional detective work. With no other option, she goes undercover, pursuing the same man as Catherine, and hoping that Catherine will slip up and reveal her true identity.
A young inductee into the military is given the task of looking after some chimpanzees used in the mysterious 'Project X'. Getting to know the chimps fairly well, he begins to suspect there is more to the secret project than he is being told.
Basket-case network news producer Jane Craig falls for new reporter Tom Grunnick, a pretty boy who represents the trend towards entertainment news she despises. Aaron Altman, a talented but plain correspondent, carries an unrequited torch for Jane. Sparks fly between the three as the network prepares for big changes, and both the news and Jane must decide between style and substance.
The members of the Lambda Lambda Lambda fraternity travel to Fort Lauderdale for a fraternity conference. They'll have to beat off the attacks of their rival frat, the Alphas, if they want to maintain their self-respect -- and, of course, if they want to get anywhere with the pretty girls!
A womanizer meets his match when he falls for the daughter of a gambling addict who is in debt to the mob.
McGriff and Albaby are probably doing the worst law enforcement job in the world - they are plain clothes U.S. military policemen on duty in war-time Saigon. However, their job becomes even harder when they start investigating the serial killings of local prostitutes. Their prime suspect is high ranking U.S. Army officer which brings their lives in danger.