Young artist Shen Yi's life changes when a commission leads to a police case gone wrong. Seven years later, he joins the Criminal Investigation Unit as a portraitist alongside Captain Du Cheng.

Set in the Tang era, where humans co-exists alongside demons. A man who is of half-human and half-demon blood named Li Xuan broke the temporal peace of the world. The story follows Li Xuan as he deals with the responsibility of protecting his different bloodlines, as well as his relationship with Su Youling, a spy from the demon tribe and his human lover, Long Wei'er.

Young artist Shen Yi's life changes when a commission leads to a police case gone wrong. Seven years later, he joins the Criminal Investigation Unit as a portraitist alongside Captain Du Cheng.

Set in the Tang era, where humans co-exists alongside demons. A man who is of half-human and half-demon blood named Li Xuan broke the temporal peace of the world. The story follows Li Xuan as he deals with the responsibility of protecting his different bloodlines, as well as his relationship with Su Youling, a spy from the demon tribe and his human lover, Long Wei'er.