In this world full of fantasy, Song Ziyuan became friends with a ghost named Zhang Xing. He always wears a black trench coat and always has a weird smile on his face, but don't be fooled by his appearance. He is actually an extremely humorous guy.
As a ghost messenger in the underworld, Zhang Xing is responsible for traveling between the human world and the underworld, guiding the souls of the dead to where they should go. At the same time, he is also responsible for capturing evil ghosts. And Song Ziyuan, as his human friend, was often involved in these weird adventures...
