惊异大奇航

塔克中尉（丹尼斯·奎德 Dennis Quaid 饰）性格冲动，蔑视威权，但他同时是开发缩微飞行器技术的“阿尔法计划”的主驾驶员。塔克酒后胡作非为导致记者女友莉迪亚（梅格·瑞恩 Meg Ryan 饰）愤怒离去，当日的工作则同样遭遇了挫折——一群匪徒闯入研究中心，试图将研制中的缩微飞行器芯片夺走，研究员为了保住芯片，将已经进入缩微状态的塔克和飞行器注入了一名路人杰克（马丁·肖特 Martin Short 饰）的屁股，杰克是一名神经过敏的超市收银员，塔克在杰克的身体内部游走，帮助其躲过匪徒的追踪后返回研究中心求助，然而中心为利益决定放弃杰克体内的塔克，二人无奈只得自救，他们向莉迪亚求助，想要在塔克的氧气耗尽前夺回被抢走的芯片，令塔克恢复原来的大小……Tuck Pendleton is a cocky pilot, who is taking part in a miniaturization experiment. When some bad guys break into the lab to steal the technology, one of the scientists takes a syringe which contains the miniaturized Tuck and vessel. Now in the vessel is part of the material needed to restore him. But the other part which is the lab is stolen. The scientist's shot but before dying he injects Tuck into Jack Putter, a hypochondriac, who feels that something is wrong with him all the time. When Tuck links himself to Jack's systems, he discovers that something happened. So they go back to the lab, and discover what happened. Now they are told that unless they retrieve the material that was stolen they won't be able to restore Tuck before his oxygen is depleted. Now the government rep decides that the only thing that matters that as long as they have the other half of the material, it is useless to the thieves. So Tuck eggs Jack to go out and find the thieves. They enlist the aid of Tuck's old girlfriend, Lydia, who is a reporter. And it's fortunate for them that she has a lead that pans out.