1. Encountering You By Accident
Serendipitously, the diverse lives of two Korean university music students converge, one a traditional gayageum player and the other the handsome but socially cold lead singer of a popular rock band called The Stupid.
Heartstrings — Season 1
Talented Lee Shin is passionate only about modern Western music. Yet all that changes when he meets lovely Lee Gyu Won, who plays traditional music.
2. That is My World
It's Wind Flowers versus The Stupid as Gyu-won and Shin make a bet over which has soul, traditional music or western music.
3. Champion
As director of the 100th anniversary show, Suk-hyun disturbs the professors by changing laid plans in order to present what seems a very personal story.
4. Towards Tomorrow
With acting rehearsals underway, several girls aim to put Gyu-won in her place, whereby Gyu-won decides to quit the show.
5. Confession
A surprise kiss leaves Gyu-won, Suk-hyun and Yoon-soo stunned, and Shin ends Gyu-won's servitude.
6. With The Thought That It Must Be Forgotten
Still reeling from a broken heart, personal tragedy touches Shin's life as well.
7. Like This... Will Be Forgotten
With the retrieval of Shin's discarded pendent, Gyu-won's slavery ends, but circumstances, once again, throw them together.
8. My Love, Cry Baby
Despite Gyu-won's superior audition, Hee-joo wins the coveted role of leading actress, but the hollowness of the victory creates bitter enemies.
9. High Speed Romance
While Suk-hyun takes the kids on a team-building excursion, Tae-joon and his aids dig for dirt against him.
10. Little by Little, Slowly Stepping Towards You
When Shin and Gyu-won officially become a couple (holding hands in public), the campus erupts.
11. That Place, That Time
Tae-joon spreads a baseless rumor about Suk-hyun before conspiring with Hee-joo's mother to set up Suk-hyun and Gyu-won for scandal.
12. Don't Cry
While the director's resignation forces students to reconsider the scandalous rumor, Joon-hee finds it increasingly difficult to live with his lie.
13. Fly High
With only one week to go, cancellation of the school's anniversary performance leaves everyone wondering what to do next.
14. Smile, You
The school performance brings about a professional offer that puts Gyu-won in conflict with her grandfather.
15. Let Your Dreams Soar
A withheld truth about the severity of an injury keeps Lee Shin and Lee Gye-won apart, even a year later.