Book advice?

Has anyone read The Kindly Ones by Melissa Scott? I am a third of the way through and though I like the worldbuilding, there just isn't much plot: some people go about their work, then meet up with old friends and go to the theater, then in a seemingly unrelated scene one of them goes to the races. Only, you know, in an SF world. Will there be more plot later? Should I go on reading?