Chen Zhihe, the male protagonist, has gone abroad to pursue research into time machines. After being treated unfairly by his company, he angrily quits and takes a train to Lin'ai Hot Spring Village to meet his foreign friend Iwasawa Songhao. On this fog-shrouded hot spring island, he enjoys lively conversations with his friend and meets a centenarian who tells him about the village's long-buried past. Chen Zhihe gradually discovers that this tranquil, idyllic island also has a bloody, cruel, and ignorant history, and that behind the warm, sincere smiles around him lie secrets chilling enough to freeze the blood...
