I became a ghost, a very special being. I planned to spend a long time in the future watching other people's lives, but I accidentally discovered a lot of strange things. I was idle and idle. I planned to understand the ins and outs of this matter, and then I met him, who was also a ghost. He was here to solve these things. Out of curiosity, I started walking with him. Gradually, I discovered that the world I was in was different from what I imagined, and his identity became an obstacle for me and him to fall in love. After many things, who gave up on whom and who changed whom.