When Yang Hao, a modern military history researcher, was participating in the Southern Song Dynasty Cultural Exhibition in the Songcheng Scenic Area in Hangzhou, he touched a mysterious ancient sword and was electrocuted to coma while trying to save a child.
When he woke up, he found himself in Lin'an City of the Southern Song Dynasty, becoming Lu Yu (a fictional character), a young official who was demoted for petitioning against the Jin Dynasty. The time was just before Yue Fei was recalled in the eleventh year of Shaoxing (1141).
