A human girl secretly raised by robots starts to uncover the dark secrets behind her lush, utopian world where humanity has all but vanished.

Thousands of years in the future, a city known as "Eden" is inhabited solely by artificially intelligent robots whose former masters vanished long ago. On a routine assignment, within the depths of the city, two maintenance robots accidentally awaken a human baby girl from stasis questioning their belief that humans were a forbidden ancient myth. Together, the two robots secretly raise the child in a safe haven outside Eden.