E92 and A37 are two agricultural robots living on Eden 3, a world populated solely by robots many thousands of years in the future. One day, they discover a capsule containing a human baby named Sara. On their planet, humans are considered evil, so to protect Sara, they decide to smuggle her off Eden and raise her somewhere else in safety. However, after growing up under the care of the robots, Sara notices a distant voice calling her back to Eden 3...