Kyungsoo has spent his entire life keeping people at a distance until he meets Jongdae and has never detested boundaries more. 

In area SK01, Taemin has grown up in a city with luminance lights glaring down on him. The whole place covered with a giant shield, nothing explaining what is beyond. Then to make his unanswered questions worse, he is living in the affluent neighborhood of the city, which looms over the poorer districts.