Fanyinju is a birthday box shop hidden on the Internet. To put it bluntly, it is an online coffin shop. Maybe because the boss Yin Sheng is not an ordinary person, maybe because his long-term partner Xiao Yezi, the courier, is not a human being, but he discovered that on the line between life and death, human feelings are often seen. The scary thing is not after death, but before death, when the land is empty and the devil is in the world.