Lin Ran and his friend Cai An were invited to investigate a deserted village shrouded in black fog all year round. They met female doctor Wang Jing and the mysterious old man Uncle Zhou. Strange things happen frequently in the village, and survival under the dark fog is full of challenges. Everyone is involved in the thrilling mystery behind the village. They collect clues in the fog, solve mysterious events, and face strange risks with laughter. Each volume unravels a mystery, while humorously teasing self-fear, and finally reveals the truth of the dark fog, completing self-salvation and growth.