Shen Wan, the daughter of the minister of Dali Temple, relied on her superb medical and forensic skills to join hands with Prince Yan Chi to solve unsolved cases and find the real culprit in order to vindicate her father.

Haunted by a blood feud, assassin Mei Lin enters a dangerous world of royal intrigue and power struggles. As she becomes the weapon of a mad prince, the obsession of a ruthless heir, and the object of a hostage prince's devotion, she finds herself caught between revenge, manipulation, and love.