Seong-jin, a conductor, and Su-yeon, a cellist, are engaged. Su-yeon disappears, leaving a video. Mi-joo replaces Su-yeon and develops a secret relationship with Seong-jin. They feel watched as their bond deepens.
Kim Dae-woo
Song Seung-heon
Cho Yeo-jeong
Park Ji-hyun
Park Ji-young
Park Seong-geun
Cha Mi-kyeong
Byun Joong-hee
Park Young-jun
Joo Ye-rin
Lee So-young
Koh Na-young
Son Eun-ho
Yoon Se-woong
Sim Woo-sung
Oh Nu-ri
Studio & New
