Humbert Humbert, a divorced British professor of French literature, travels to small-town America for a teaching position. He allows himself to be swept into a relationship with Charlotte Haze, his widowed and sexually famished landlady, whom he marries in order that he might pursue the woman's 14-year-old flirtatious daughter, Lolita, with whom he has fallen hopelessly in love, but whose affections shall be thwarted by a devious trickster named Clare Quilty.

Charlie stays at a boarding-house, where he is the landlady's favorite. Her husband grows jealous when observing this. Their little son has a camera. He happens to take some photos of his mother and Charlie in situations which are innocent but look indecent. He also takes a photo of his father and a female boarding-guest in a similar situation. In the evening the boy arranges a slide show in the boarding-house. Suddenly also the equivocal photos of his parents appear on the screen. His jealous father gets furious and starts chasing Charlie. Soon all the boarding-guests are involved in the fight.

Umberto Ferrari, aged government-pensioner, attends a street demonstration held by his fellow pensioners. The police dispense the crowd and Unberto returns to his cheap furnished room which he shares with his dog Flick. Umberto's lone friend is Maria, servant of the boarding house. She is a simple girl who is pregnant by one of two soldiers and neither will admit to being the father. When Umberto's landlady, Antonia, demands the rent owed her and threatens eviction if she is not paid, Umberto tries desperately to raise the money by selling his books and watch. He is too proud to beg in the streets and can not get a loan from any of his acquaintances. He contracts a sore throat, is admitted to a hospital and this puts a delay on his financial difficulty. Discharged, he finds that his dog is gone and, following a frantic search, locates him in the city dog pound. His room has been...