Shia, the girl who lost both her legs in an accident, lost the glimmer of hope to become a professional runner in the world. However, the doctor who treated Shia suggested that Shia try a new program in the form of virtual reality to be able to create new characters according to her wishes. Initially believed that this was a highly developed virtual world, but after Chia went on many trips and adventures with her feline companion to save the fictional World Tree, it turns out that there is a hidden truth behind it. This will be the story of a girl who saves the virtual world (and the real world?) with her feline companion.