The imperial harem is where the world's beauties have all gathered. Karin (Hua Ling), a maid in training, dreams of making friends. However, due to her father's heinous acts as a politician, she spends tearful days with everyone too scared to approach her... It was then that she noticed that the young emperor, the only one willing to treat he with kindness, was being targeted by assassins. What will come of her as she becomes involved in the imperial harem's conspiracies while protecting the emperor with the assassination skills inherited from her father?