The robot Caretaker of Seattle Farm 0722 knows its work is important...
The robot Caretaker of Seattle Farm 0722 knows its work is important—it nourishes life, and the resulting harvest feeds the legacy humans, the ones the Masters care for and keep in Seattle. But when humans begin to make unauthorized incursions onto the Farmland, the Caretaker soon finds it has been cultivating more than it knew… and that some things were never meant to grow.
Harvest is a standalone short story that takes place in the world of the Singularity novels.
Start the novel series with The Legacy Human (Singularity 1).