The protagonist Jack is in his late twenties, a well-paid stockbroker who always flirts with his changing secretaries. It's a pleasant, idle life; however, he can't fully embrace it because he is seeking something - it's not exactly describable what, but it can't be found in this lifestyle that hardly changes throughout the course of the novel. Generally, not much happens, except for the psychological problems of Kate, who grew up in the same household as Jack. Despite financial security, she can't find happiness.
The climax of the book comes towards the very end when, after a suicide attempt, Kate travels with Jack to a business conference in Chicago without the worried family knowing. The trust of Jack's mentor figure, his aunt Emily, is deeply shaken, but in the epilogue, the waves calm down. However, Jack is still on the search.
At the beginning, some dialogues are still clumsily constructed. Events are cut short and characters are mentioned that the readers don't know; this improves towards the end. Also, the inserted philosophical passages seem too strained, and some content digressions stand completely senseless as cumbersome monoliths in the plot plane.
In the second half, however, the book gains in quality, acquires more drive, achieves a magnificent plasticity in the description of the southern swamps and New Orleans, and falls into a kind of elegiac tone, so that at the end one can sense the "search" of the protagonist much more through the stylistic level than through the level of the action.
It is a specific emptiness that occurs despite the fullness of the environment or the comfort of the described buildings, which Percy captures excellently.
Incidentally, one can also subtly sense what the just abolished racial segregation still entails in terms of aftereffects, because the Blacks always remain in the background, on the periphery, are never actors, but always reactors. This exclusion becomes particularly clear in a statement by Emily, who vents her anger at Jack after the Chicago trip, but also falls into a praise of a mindset of ancient quality (noble simplicity, quiet greatness) that in her opinion the ancestors of the family still possessed. That this carefree life in mercy and magnanimity was only possible through the exploitation of the Blacks, she ignores - significantly, that her housekeeper is a Black.
If one omits the first hundred pages, it is a very good book.