XR_935 is, like most other robots a dutiful worker who installs solar panels all day before going home to his parent unit bots at night. He has two coworkers called Ceeron and SkD_988. The latter is curiously funny as he communicates via emojis that flash on his screen.
The trio can count on things being the same because robot society is ordered and disciplined. This all changes however when they encounter an unknown life form on the job. The unknown life form turns out to be a kid called Emma who is actually a survivor form a hidden colony. Emma needs help and the robots must decide if to go against the creed of robot kind: "A robot shares everything with the Hive. A robot has nothing to hide."
This is a thought provoking book that deals with issues such as human action on the environment, climate change, friendship, AI, freedom of thought and speech. I recommend it for ages 9 and above. Some read alikes to this are Peter Brown's The Wild Robot, Paul Stewart's Zoid and Tom Angleberger's Fuzzy.