Hwan, Jae Yi, Myeong Jin and Ga Ram finally meet. They head out to solve the Cardinal Point case. Meanwhile, Seong On feels humiliated since he's competing against Sun Dol and feels upset when he sees Hwan and Sun Dol together.

Jae-yi proves herself by solving the Cardial Point case and Hwan starts to trust her. Hwan listens to what happened to Jae-yi's family and trusts that she is innocent. Seong-on and Jae-yi run into each other by accident and she finds out Seong-on has been carrying something that has something to do with her.

After Hwan decides that he can't trust Jae Yi, he kicks her out of the palace. Ga Ram is ordered a chusoeryeong and is put in danger. Seong On is curious as to why Hwan is looking into the case of his ex-fiancé and Hwan feels lonely now more than ever without Jae Yi.