Lin Hechuan, an ordinary young man, accidentally traveled into the world of "Doraemon Rules and Strange Tales". What greeted him was Doraemon, who had empty eyes and a twisted smile, and acted as the enforcer of the rules. Doraemon threw him a yellowed manual, which was full of strict rules: he must disguise himself as Nobita's cousin and must not question his identity, otherwise danger will come; facing the weird school, props and partners, if he is not careful, he will be in catastrophe. In this familiar and terrifying world, Lin Yi must strictly abide by the rules and explore the truth. He must struggle to survive in the shocking world of ghost stories and find a way to return to reality.
