A K-fantasy action unfolds as the Nine-tailed fox makes a crash landing in the year 1938, an era of chaos, and he struggles to return to the present.
Xiao Wei is a fox demon who feasts on human hearts in order to maintain his clean, youthful appearance. When General Pei Rong rescues him from the remains of a battlefield and offers him a home, trouble begins. The hearts of Pei Rong and her husband, Wang Sheng, are Xiao Wei's biggest desire - however, both are desired for very different reasons.