归处是心灵的港湾，让人倍感温暖与宁静。《深不可测》小说原文

　　In the future city of Submittan, people over 80 years old are forced into 'retirement' to a remote mountain area, as the city deals with increased population. The burden falls on the shoulder of an immigrant artist, who is tasked to design a propaganda poster to convince citizens of this new registration.