| Release Date | 2010-11-02 |
|---|---|
| Runtime | 66 minutes |
| Genres | Comedy, Drama |
| Stars | Park Min-young, Park Yoo-chun, Yoo Ah-in, Song Joong-ki, Kim Kap-soo |
| Directors | Kim Tae-hee, Kim Won-suk, Jung Eun-gwol, Hwang In-hyuk, Jung Eun-gwol |
Kim Yun Hee is a smart, responsible young woman with an independent drive. Since her father passed away she has worked to support her family, but also managed to do well in her studies. When her younger brother's illness worsens and their family is in danger of being evicted from their house for lack of money. In her desperation to support him, Kim Yoon Hee decides to take the men's only national exam under her younger brother's name and disguises herself as a boy. On the day of the exam, Kim Yun Hee meets Lee Seon Joon and becomes friends. Lee Seon Joon comes from a privileged background and also possesses good looks. He is also arrogant. They both pass the national exam and she has to share a room together with him at Sungkyunkwan University, while hiding her true nature. There, she becomes friends with the playboy Goo Yong Ha and rebellious Moon Jae Shin.
Yoon-hee dresses as a man to provide for her family by copying manuscripts. When the debt collectors up their game, Yoon-hee decides to do the same.
Sun-joon arranges for Yoon-hee to take the imperial examinations under her brother’s name, but her answer on the test catches the eye of the king.
Yoon-hee saves Sun-joon from the upperclassmen’s initiation punishment, but she gets herself into a new spot of trouble.
Classes begin, and Yoon-hee attends her very first lecture. In-soo’s hatred of Sun-joon leads him to set his sights on Yoon-hee.
Professor Jung stumbles upon Yoon-hee’s secret after her rescue. Later, Sun-joon helps Yoon-hee prepare for the archery competition.
Professor Jung tells Yoon-hee she must win the archery competition to continue her studies at Sungkyunkwan. Yoon-hee and Sun-joon continue training.
Yoon-hee’s team and In-soo’s team go head to head in the archery contest, but someone is plotting against Yoon-hee in the shadows.
In-soo embarrasses Yoon-hee in front of everyone. Yoon-hee dejectedly heads home, but someone is secretly following after her.
The scholars return to find their valuables missing, and people suspect Yoon-hee. The king presents her with a way to prove her innocence.
Sun-joon runs into trouble in his search but is saved from danger. A vital clue helps to finally reveal the identity of the true culprit.
The king’s investigation takes a surprising turn. Yoon-hee opens up to Sun-joon, who says he wants her to stay by his side.
Sun-joon and Yoon-hee spend a night stranded on an uninhabited island. Sun-joon struggles with his emotions. Jae-shin and Yoon-hee grow closer.
Yoon-hee tries to mend her relationship with Sun-joon, but he reacts coldly. Sun-joon and Jae-shin clash over Yoon-hee.
The rumor that Yoon-hee and Jae-shin are lovers spreads like wildfire. Yoon-hee thinks Sun-joon started it. In-soo calls for an inquiry.
After the inquiry, Sun-joon drops out of Sungkyunkwan and decides to marry Hyo-eun. But before he does, he confesses his feelings to Yoon-hee.
Sun-joon is shocked to find out that Yoon-hee is a girl. He tries to convince her to drop out before her secret gets out, but Yoon-hee wants to stay.
In hopes of reforming Joseon, the king gives the group a secret mission. As they work to solve a mystery, Sun-joon and Yoon-hee share their feelings.
Sun-joon is stunned by his father’s implication in the incident. He looks for the one witness who can reveal the truth, but the trail goes cold.
When Jae-shin is injured, Sun-joon names himself as the Red Messenger. Yoon-hee leads the student body in an attempt to save Sun-joon.
The king accepts the students’ petition and releases Sun-joon. Yoon-hee receives the king’s thanks for her efforts. In-soo learns Yoon-hee’s secret.
