A girl named Ji Yin who suffered a landslide was taken by the Green Bean Lingyu to a small mountain village of boys in a different world... And the Orion Jiang Chenshuo. Jiang Chenshuo was not an Orion, or even from this country, and began to search for his home. As a result, I found my sister in an alien plane and learned that my modern sister Ji Yue was no longer my sister. My sister had died a long time ago. Now my sister lives in a strange world... Ji Yin, Ji Yue's life has not been settled yet.