The novels have a focus on some of the more machine elements of the story. There are three separate yet interconnected stories:
Story one, Double Targets, wherein Aramaki is marked for assassination and it's up to Section 9 to stop the killer.
Story two, First Love, Last Love, tells the tale of a Tachikoma and its adventures with a female traffic cop who unluckily got in its way.
Story three, Revenge of the Cold Machines, tells the tale of a cyber parts manufacturer and his past coming back to haunt him.