In 2049, the red mist descended and the world fell into a strange apocalypse. The ordinary heroine Lin Ye hid in her ancestral home and accidentally discovered the "Yin Yang Stocking Guide" left by her grandfather - this seemingly ordinary notebook turned out to be the carrier of strange rules. The first rule made her hair stand on end: "You must put incense on the ancient mirror in the courtyard at midnight every day, otherwise the credit ghost will crawl out of the mirror."
When she broke the rules for the first time, the black hand stretched out in the mirror instantly stole all the supplies. In a desperate situation, Lin Ye relied on the guide to fight back. Not only did he obtain the "space warehouse" ability, but he also opened the "Yin and Yang Live Room" that connects to the mysterious dimension.
From then on, Lin Ye embarked on the road of survival by hoarding goods crazily amidst the weird rules. The "shadows on the shelves" in the abandoned supermarket require candy sacrifices, the hospital elevator "can only use the third floor", the bank vault "you need to leave your hair as collateral to withdraw gold bars"... Each stocking point corresponds to fatal rules. She attracted survivors and established a refuge base by live-streaming her stocking diary, but found herself gradually involved in a deeper conspiracy.
The mysterious disappearance of Shuchen Village twenty years ago, the truth about grandpa's incarnation as the "Guardian of the Rules", and the aura of Cthulhu's "Sleeping Mother" behind the red mist emerged one after another. When the boundary between the mirror world and reality begins to blur, Lin Ye discovers that the rules can be rewritten, but every time they are rewritten, there is a heavy price to pay.
With the assistance of the mysterious former criminal investigation captain Lu Xun, she led the survivors through the strange stories of the rules, from passive survival to active rewriting of the rules, and finally faced the terrifying truth behind the "door". This is a legend about relying on wisdom and courage to "stock up and become a god" in the end of the world. It is also a life-and-death game in which humans find hope amidst rules and madness.