In the future, in 2036, the biggest difference between people is no longer age, occupation or skin color, but the score given to each person through a complex evaluation mechanism. The score divides class and destiny, motivating people to show their talents, improve themselves, and compete with humanoid robots that look like real people but are extremely sophisticated inside. Such an evaluation machine has created a collective trend of pursuing perfection, but the vanity and jealousy in human nature are so subtle that they cannot be detected by this mechanism. Therefore, in order to pursue perfection, people even choose the ugliest.