The story is set into motion by the renewed appearance of Captain Wentworth. Anne's pompous and status-conscious father has squandered much of his fortune and is forced to let out the family estate, Kellynch. By chance, the new renters, Admiral Croft and his wife, are related to Captain Wentworth, who has returned with a fortune - and still a bachelor - from the Napoleonic Wars. He has never forgiven Anne for allowing herself to be persuaded to break up the engagement and their first meeting after all those years is a difficult one.
Misunderstandings and social restrictions keep them for a long time from getting to know each other's true feelings - there are other, younger women interested in Wentworth, and a devious nephew is trying to court Anne. But, as every reader of Jane Austen's novels knows, in the end the emotional tangle will be cleared up and things will be set right...
More interesting than the plot is again - as in other Jane Austen novels - the "comedy of manners," where the hypocrisy of society is revealed in the extreme vanity of Anne's father and elder sister Elizabeth. They are only interested in titles and despise people who are not part of the aristocracy - Elizabeth regards Anne as inconsequential as Anne doesn't share her prejudices - and in a nice scene are shown demurely licking the heels of a viscountess, lady Dalrymple. Another hypocrite is Anne's unscrupulous nephew William, who after an estrangement with Sir Walter caused by his lowly marriage (for money) now as a rich widower is courting Anne for her title. Even Lady Russel, though of a practical mind, is very susceptible to matters of rank and birth and therefore, with her wrong persuasion, has made Anne's life unhappy.
But at the same time, the second theme of the novel is the rise of the professional classes which would end the domination of the landed gentry. Jane Austen speaks with admiration about Captain Wentworth and other naval officers (including Admiral Croft, who has none of the foolish pride of Jane's father and does away with his collection of large mirrors after renting the house). These people work for their living and do great things, while Mr Elliott and others of his class only sit on their fat ass. Austen shows that too much reliance on money and connections leads to a false life. This is also a break with other novels by Jane Austen: in Pride and Prejudice, for example, the heroine Elizabeth Bennet marries inherited wealth and rank in the person of Mr. Darcy; in Persuasion, the hereditary aristocracy is held up to ridicule, while the rising meritocracy made up of successful officers in the Royal Navy gets full praise. In that sense, too, Anne's eventual marriage to Captain Wentworth shows the way to the future.
Free at Gutenberg or the Adelaide University Etext Center. I have read the Penguin Classics version. Persuasion is referenced in John Fowles's The French Lieutenant's Woman. Since 1960, the novel has been filmed four times for television.