Young-ho doesn't have any dreams for his life. He has been studying for three years to enter a university. He decides to send a letter to his childhood friend So-yeon. But her younger sister So-hee receives the letter instead of her sick sister. So-hee writes back to Young-ho, pretending to be So-yeon. Meanwhile, So-hee takes care of her sick sister and also runs a secondhand bookstore with her mother.
Lee Hyeong is a talented songwriter. He happens to connect people who are not good with love. Those include Hyeong-Gyeong who wants to become a singer, but she suffers from stage fright. Scully is a high school student. She helps Lee Hyeong's spirit. Chan-Young is a colleague of Lee Hyeong and he likes Hyeong-Gyeong, but in vain.
High school student Jung-Won (Cha Ye-Ryeon]) works at an amusement park, dressed up as Dragon cartoon character. Then one day, a guy, standing among his friends, twists her dragon mask around, causing her to fall flat on her back. Shortly afterwards, she spots the guy that caused her to fall down. Jung-won proceeds to pour a drink over his head. A few days later Jung-Won is horsing around with her brother on the top floor of their home. They notice that a new family moved in next door. Jung-Won then gets a sickening feeling when she realizes that the young guy in their family is the same guy that twisted her dragon mask around in the amusement park. His name is Eun-Kyu (Jang Keun-Suk), a popular high school student that fronts the band “Doremifasolasido.”
A young writer can't write a word for his next novel, he also doesn't feel right with his fiancée; because he falls in love with a woman, but he can't remember who she is and can't figure out if she's real or just a dream.
