In thousands of worlds, there is an existence called Heavenly Dao, but there are always people who disobey everything arranged by Heavenly Dao.
In order to maintain the stability of the world, Wanqian Tiandao established an organization named "Quick Travel", which specially collects some undead souls with unfulfilled wishes and assigns them to the system to complete tasks in various major worlds to stabilize the world and prevent it from collapsing.
However, these always have some special examples...
Purpose: Nothing else, just want to make myself happy