Mette, a twenty-year old programmer of visual effects for video games, lives with her mother, Saskia, an aspiring playwright, in Brooklyn. Mette is a private and socially awkward young woman, who finds something consoling in repetitive mathematical calculations. But she has been recently rejected in love, and feels stuck in an endless loop, no longer certain of her place in the world.

As Brian Hall's new novel opens, Mette has gone missing. Her disappearance forces Saskia to reunite with Mette's father, Mark, an emotionally distant astronomy professor in Ithaca, to embark on a journey together to find her. Mette's path will take her across America and then to a fateful visit with her charismatic grandfather, Thomas, who formerly ran the commune north of Ithaca where Saskia was raised, and who now lives as a hermit in a windmill on a remote Danish island.