In the new venue, Khun explains to a wonderstruck Bam that the "sky" here is an imitation created by Shinsu modeled after the legend, which he doubts exists. They meet the director of the test, Hansung Yu, who challenges them to find the right door out of twelve identical ones within 10 minutes given only one chance, lest they be forcefully terminated. Although Khun tries to think, he is inadvertently haunted by his past of being betrayed by his half-sister Maria after she was chosen to become one of the elite girls, a Princess of Jahad, through his help, thereby exiling the Aguero family as well...