The eternal River Styx is passing through the years. Is the measuring ruler of the Styx in my hand measuring the heaven and earth or my own heart? The source of frequent blood rains, is a blood lotus killing or tolerating? The once glorious temple is indeed a ruined ruin today. In the entire plane, there are countless forces, numerous races, countless glories and tragedies, as well as countless prides and despairs. What secrets are hidden in a sealed secret realm? A country hiding ancient secrets, an ordinary town, a mysterious family, the story begins here.