Our Blooming Youth

A rumor about how Prince Hwan has been cursed by a ghost has spread throughout the country. He has a dark secret he can't tell anyone. People who are trying to get Hwan dethroned prepare a trap and Hwan must stand against them. Meanwhile, the one who killed Hwan's Master comes to see him of her own free will.

After facing a crisis at the hunting grounds, Hwan finds himself in an unbelievable situation. Jae-yi claims that she's innocent and blames Hwan for the death of her family. Hwan is confused when he finds out Jae-yi knows about his secret. Meanwhile, Jae-yi's servant disguises herself as a man to learn from the mad scientist, Kim Myeong-jin.

Hwan can't trust Jae-yi and tells her to come find him in the East Palace on her own. To get there, Jae-yi turns herself into a eunuch. Meanwhile, Seong-on is shock to learn that his father might have something to do with the written prayer incident.

Hwan gives Jae-yi a second test. She must figure out why the messenger he sent to Master Min's house was killed and Jae-yi finds out it has something to do with Hwan. And finally, Hwan gives the last test which is to solve a serial murdercase. Now Jae-yi must face her fiancé.

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.