As a mother who cares about her children's education, her friend Amway watched this drama, and she couldn't stop watching four episodes in one breath. Although the play uses black humor and some settings in the story are very magical, I think it is of great practical significance. The story takes place in a community called "sky", which is mainly composed of four families located in the upper middle class of the social pyramid. This point has been made clear in Professor Che's "inculcation" of twin sons in the dark room. So they are between the middle class and the powerful, an extremely unstable class, let's just call it the "elite class". This class is endowed with a high social status, but it is different from the real dignitaries. They have no power (politicians) or capital (chaebol). What they have now is recognized by the society because of their skills (work, education, etc.). Several groups of family men in the play are doctors and prosecutors, which are also in line with this class characteristic, so their plot of their children's prestigious schools is self-evident.