Not exactly a highrise. But there are 3 stories.
Part of the fun of this book is trying to figure out if and how its three distinctly different tales will ultimately connect. Will A be tied to B? Will B share some link with C? Spoiler alert: A,B and C are the first three letters of the alphabet. And all three stories were told using... letters of the alphabet. That's all you get from me. Try it; you'll like it.