"Between somewhere and someone." U-chronia is a mysterious world constantly changing like a book whose pages are flipped out of order. You will wear the shoes of OU, the protagonist, to live through this game-shaped experience—without knowing what it really is.

The place is U-chronia, a hazy world that lives in hazy memories of the distant past. OU, a young boy, wakes up in a dried up riverbed without any memories of his own. He meets Zarry, an opossum with a flaming tail, who guides him on a journey to find out his story. The Saudage Specter, who haunts the boy; Gemini, who looks just like him; The Weeping Woman "La Llorona", who leads him to tragedy. All of them are there to change the Story and how it will end.