Special Forces "Zero" is simply an undefeated myth in the 21st century. He completes the mission with zero mistakes and plays with the world with his super powers.
As a result, some people neglected their duties and traveled to a country whose history has no record at all.
A simple family, an extraordinary background, what changes will make "Ling" happen? Ling who becomes Qingyu will find his own family, friendship and love in this time and space