Soon after the Second World War, in the
West Riding of Yorkshire, England, Joe Lampton, an ambitious young man, moves from his hometown, the dreary factory town of Dufton, to the somewhat larger town of Warnley to assume a secure but poorly paid and dead-end post in the Borough Treasurer's Department. Determined to get ahead, and ignoring the warnings of his colleague and flatmate Charlie Soames, he pursues Susan Brown, the daughter of a local industrial magnate. She has been dating wealthy Jack Wales but Joe is able to charm her. Mr and Mrs Brown attempt to frustrate Joe's social climbing by persuading Joe's boss to encourage him to pursue a woman of his own class; getting him a job offer back in Dufton, which he refuses when he discovers the machination; and sending Susan on a trip abroad, but Susan remains smitten. While pursuing Susan, Joe continues to see Alice Aisgill, an unhappily married Frenchwoman ten years his senior who came to England as a teacher a decade earlier and married George Aisgill, a haughty and abusive upper-middle class Englishman who is now having numerous affairs. Joe thinks he is just killing time with Alice and Alice says they can just be "loving friends". Their feelings for each other begin to turn into something more and Joe starts to lose interest in his pursuit of Susan. The relationship is passionate, tempestuous and after a particularly heated argument, Joe switches his focus back to Susan. He manages to take her virginity but is unsatisfied and finds himself drawn back to Alice. Joe and Alice go away on a short holiday and Alice is overjoyed that Joe seems to have decided to end his quest for wealth and social status in favour of simply being happy with himself and with her. They decide she will ask for a divorce when she gets home but when she does, George refuses and declares he will ruin Joe and Alice, both socially and financially, if their relationship continues. While Joe is brooding over this, Mr Brown delivers the news that Susan is pregnant and that he expects Joe to stop seeing Alice and marry Susan, in which case Joe can come to work for him at a generous salary. Seeing no way around his obstacles to a relationship with Alice, Joe tells her that he is going to marry Susan. Heartbroken, Alice gets drunk in a pub and the next morning, while his co-workers are celebrating his engagement, Joe hears that she drove her car off a cliff to which she and he used to go together and died slowly over the course of several hours. Devastated, Joe leaves the office and wanders to the flat where he and Alice had their trysts but Alice's friend Elspeth, who owns the flat, drives him away by screaming at him and blaming him for Alice's death. Joe goes to a pub on the waterfront, where a woman named Mavis comes on to him because he is well-dressed. Although he is very drunk and does not seem very interested in her (he calls her Alice), Joe keeps a man from taking Mavis away against her will. When Joe is alone, the man and some of his friends beat Joe unconscious. In the morning, Charlie finds Joe lying in the street with a battered face but Joe's only concern is his guilt over what he feels he led Alice to do. A short time later, Joe and Susan get married. With a rich wife and high-paying job, he has got everything he thought he wanted. As they are driven away after the wedding, Susan's effusive praise of the ceremony is cut short when she notices that there are tears in Joe's eyes, which she misinterprets by saying "I believe you really are sentimental after all". ==Cast==