This series is a reflection from the book "Never Let Me Go" by K. Ishiguro.
In simple terms, it is about clones that exist only to donate vital organs to the original later. we see clones without an identity of their own, trapped in time partitions whose duration they do not know and which do not allow them any enjoyment of life. they are "on hold" - for someone else.
The Uncanny Valley is a term used to describe the relationship between the human-like appearance of a robotic object and the emotional response it evokes.
In this phenomenon, people feel a sense of unease or even revulsion in response to humanoid robots that are highly realistic.