During a cross-country lecture tour, notoriously acerbic radio personality Sheridan Whiteside slips on the icy steps of the house of the Stanleys, a prominent Ohio family, and is forced to recuperate in their home during the Christmas holidays. The overbearing, self-centered celebrity soon comes to dominate the lives of the residents and everyone else who enters the household. He encourages young adults Richard and June Stanley to pursue their dreams, much to the dismay of their conventional father Ernest.　　Meanwhile, Whiteside's spinster assistant Maggie Cutler finds herself attracted to local newspaperman Bert Jefferson. When she reads Bert's play, she is so impressed she asks Whiteside to show it to his contacts, and then announces she will quit his employment and marry Bert. However, her boss is loath to lose such an efficient aide and does his best to sabotage the blossoming romance...

　　洛杉矶的飞机制造厂里，突然发生了一场火灾，工人伯金（Robert Cummings 饰）和朋友简奋勇救火，但简不幸葬身火海，事后调查发现伯金递给简的灭火器中装满了电油，于是警方将伯金定为重大嫌疑人，展开搜捕。获悉这一情况的伯金回忆后发现，灭火器实际出自一名叫做弗莱的工人之手，但警方并未给伯金说明的机会，危急时刻，伯金奋力逃出，追寻弗莱的去向为自己洗脱罪名。在弗莱工作过的农场，伯金发现农场主杜宾居然也跟此事有牵连，于是匆忙逃跑。亡命路途上，铂金结识了广告模特佩蒂（Priscilla Lane 饰），铂金用诚挚打消了后者对自己的怀疑，与她结伴同行。在弗莱可能藏身的荒僻小镇，伯金乔装成杜宾的手下，打入了这个神秘的破坏组织内部……