"Huh? What kind of APP is this?" The male protagonist Xiao Wen clicked on the APP called "Another World" that suddenly appeared on the mobile phone screen, and then he was involved in another world that is different from the modern world. In this world, everything is similar to the modern world but different. People with the same face as in the real world are not necessarily the people you know. Xiao Wen experienced a series of bizarre and sad stories in this world. He gradually discovered that the development of this world has traces to follow, so can he escape successfully in the end?