It's about terrorism, money laundering, russian mobsters, chinese virus writers and MMR video games. It's a sprawling thing, multiple narratives in parallel where each chapter usually jumps you back a few hours to bring you up the fork in the story you just passed. A great read, some challenging stuff, which definitely doesn't pander and always assumes you can keep up. My only quibble would be one or two overly convenient and unlikely coincidences.