故事簡介：
在未來的地球，海洋乾涸，海床上卻封存著星球的歷史記憶，萬物的樣貌與現今相差甚遠，人類的後裔受不可抗力，困於一處巨大的環形山內部，沒有任何方法出去，此地卻有著一座詭異的巨石門坐落在山壁。環形山內的人們對外面世界一無所知，代代生活在閉鎖的世界，逐漸發展出了龐大的城市，階級制度也隨著人心不可避免的建立。主角二人也生活在山裡，老學者與他的助手。為了理清一切的謎團，作為科學家的他們，以探索世界的真相為使命，邁向那座巨大石門，他們深信唯一的出路就在門後，無論路途多麼凶險，答案一定會在旅途的終點。

Introduction:
In a future iteration of Earth, the oceans have dried up, leaving behind a sealed repository of the planet's historical memories on the seabed. The physical appearance of all living organisms and surroundings has undergone a drastic transformation, and the descendants of humanity are encased within the confines of a colossal circular mountain with no viable means of escape. However, an enigmatic stone gate rests on the mountain wall. The inhabitants of the circular mountain have no knowledge of the outside world and have developed a vast city within its walls, along with an inherently hierarchical system. The two main protagonists, an erudite scholar, and his assistant, both driven by their scientific pursuit of truth, embark on a quest to untangle the mysteries surrounding their confined world. With unwavering conviction, they believe that the only path to liberation lies beyond the gate and that their arduous journey will ultimately lead them to the answers they seek, regardless of the danger that awaits them along the way.