Kai was orphaned at a young age and raised by his uncle, who sent now 20 years old young man to a conversion clinic when he discovered Kai was gay. Carey's submissive Alistair insisted that Kai come with him when they were rescued from the clinic. When they arrive at Carey's club, the bar manager Harry immediately takes Kai under his wing. There's an instant attraction between the two, but Kai has no experience as a submissive. He doesn't have any experience at all.
Although this is the fifth book in the series, it's actually a more or less direct sequel to the third book, Dancing on the Edge. These stories can be read as stand-alone books, but you'll have a better idea of what Kai has been through if you've read volume three of the series.
Kai is perhaps the sweetest young submissive of the series so far. His innocence and inexperience are quite realistically portrayed. He hasn't been completely shut away from the world, so he isn't totally clueless about gay sex or even BDSM, but he naturally doesn't know if it's for him or if Harry will have the patience to deal with someone with so much to learn. Much of the story is both Kai and Harry dealing with how best to make Kai's introduction to Harry's world as easy as possible.
Harry hasn't played any role in the stories up to now. Like many of the other men of the Underground Club, he turns out to have a few surprises for us. Like pretty much all of the masters of the series so far, Harry is a hard-nosed dominant, until he meets the right sub. Then Harry turns into a gooey mush.
Aside from the central issue of Kai's inexperience and Harry's doubt, the external drama is provided by the young man's uncle. It's a plot right out of classic British mysteries involving wills and inheritance.
“Rough Around the Edges” is available from Amazon.