Surya, a tech historian, buys an old Sun workstation at a garage sale, expecting a working example of a CPU her grandmother designed, not secrets. Accidentally left on the drive are two files of NASA’s lost Voyager 2 data. When she attempts to learn about the workstation’s history by contacting a name she discovers in one of the files, she attracts unwanted attention: break-ins, shadowy men, and veiled threats. She eventually tracks down Mark Danforth, a retired engineer now fading into dementia, who may hold the key. But someone will do anything to keep the files she has discovered buried.