In the heart of the Xingsu village, Cheng Ming - a young and skilled warrior embarks on a dangerous mission. To find out the plans of her enemies, she infiltrates the rival village disguised as a servant for the empress. Initially the two women clash, however when a new journey opens up Cheng Ming delves deeper into the world of Yin Qi , she discovers that the line between friend and foe are not as clear as she once believed.