故事发生在1978年，12岁的男孩大卫（乔伊·克莱默 Joey Cramer 饰）在意外之中坠入山谷，失去了意识。醒来后，大卫回到了家，却发现眼前的一切已经物是人非，原来此时的时间已经来到了1986年，这也就意味着，12岁的大卫需要面对的，是八年后的未来世界，在大卫昏迷期间，究竟发生了什么？
大卫好不容易找到了失散的家人，当初比他小四岁的弟弟杰夫（Matt Adler 饰）如今已经长成了大男孩，而大卫却还是12岁的模样。之后，一艘外太空飞行物降落地球，而它的存在和大卫遇到的难解之谜有着千丝万缕的关联。于是，太空总署找到了大卫，希望他能够协助调查此事。

After an eleven year absence from the screen, Sidney Poitier chose to return in an action/adventure film where he plays an FBI agent in search of a killer.
He's got good reason to want this guy bad. His quarry is ruthless and kills without mercy. Poitier loses a hostage and the ransom he's asked for. But some good detective work has traced the man to a remote part of the Pacific Northwest.
Where the perpetrator has killed again and joined a party of dry fly fishermen being guided by Kirstie Alley into the rugged mountains. No place for a city kid like Poitier, says mountaineer/hermit Tom Berenger who has the prerequisite skills to get the job done. These two are forced into an alliance of inconvenience.
The best thing I liked about Shoot To Kill is the guessing game we play for the identity of the perpetrator. Any one of the five men in Kirstie Alley's party could have been the killer. Look at the cast list and you'll recognize a few names who've played some pretty loathsome villains in the past. The identity is revealed suddenly and quite shockingly.
What I didn't like with Shoot To Kill is the fact that the final confrontation with the perpetrator is in big city Vancouver where he's escaped with Alley. He needed her in the woods, not any longer, she should have wound up dead. And Berenger and Poitier should have confronted him in the woods.
That script decision made the climax a rather ordinary one that you see in a whole lot of police chase films. Still all the players do fine here, my favorite being Kirstie Alley as the woods smart guide.