It is the end of summer. Han Hui, a university student, meets a mysterious young girl named He Jia in the mountains. After this chance meeting, the two embark on a delightful journey.

Shan Gui is a short, linear, kinetic visual-novel set in Nanjing's gorgeous Purple Mountain. It follows the adventure of two young girls as they tour the park, attempting to recount faded childhood memories. Han Hui is moody and depressed until she eventually becomes enraptured by He Jia's overwhelming warmth and happiness. In He Jia, Han Hui finds respite from her sadness and a brand new friend... a friend who may be more than she suggests.