"In a strange little home built into the branches of a grove of trees, live three robots--fatherly inventor android Giovanni Lawson, a pleasantly sadistic nurse machine, and a small vacuum desperate for love and attention. Victor Lawson, a human, lives there too. They're a family, hidden and safe. The day Vic salvages and repairs an unfamiliar android labelled "HAP," he learns of a shared dark past between Hap and Gio--a past spent hunting humans....