The request is simple: help an old friend out on a missing persons case. But Henry Malone should have known nothing is ever as simple as it seems. When Pete Calhoun, a retired West Virginia state trooper, comes to Serenity to see Henry, it's not just to reunite with a former colleague. Pete needs Henry's help finding Isaac Martin, a computer expert who's vanished at the cusp of a business deal possibly worth millions. Henry is thrown in a growing world of secrets, from Isaac Martin's real identity to Pete's motives to find the missing man. Henry and his well-armed friend and AA sponsor Woody are dragged deep into a world of shadowy electronic currency, where the FBI, rival international criminal organizations, and a deadly family of marijuana farmers compete, with Isaac as the ultimate prize.