Millions of years ago, the world of gods declined. The three gods who were most qualified to inherit the throne of god kings turned against each other due to disagreements. One of them turned into a ghost, and the other degenerated into a demon. Millions of years later, can a mortal journey change their rigid relationship? Can an unparalleled situation allow the darkness beneath the calm surface to emerge? After experiencing the mortal journey, are the three people still so heartless and careless? The residual music has been played, and the mortal world has also gone through a century of prosperity...