It tells the story of Fang Yi, a young girl who enters the world of martial arts by mistake and turns into a swordsman, Rong Shu Kuang, who joins hands with a domineering warrior, Yan Shao, to unravel the mysteries of the past and the present world, and to protect each other in the world of martial arts. Adapted from the novel "Yu Yan Shao Tong Mian" (与艳少同眠) by Shen Cang Mei (沈沧眉).