Li Xiulan, who suffers from mild Alzheimer's disease, lives in Hope Town with her daughter He Ling. Under the careful care of He Ling and nanny Ah Hui, Li Xiulan gradually recovered part of her memory and ability to take care of herself. One day, she met another resident Guihua while taking a walk. The eccentric Osmanthus talks incoherently. She claimed that she lived in 1998, which shocked Li Xiulan. Afterwards, Li visited Osmanthus again. Guihua told Li that Hope Town was a scam created by aliens to experiment with human living conditions in torn space. Li Jiangxin was suspicious and began to doubt his daughter and the entire Hope Town. Eventually, Lee decided to escape Hope Town. However, the truth shocked her.