Jung Sook is preparing for Hyuk Joon’s birthday party at home, but Hyuk Joon has to watch over Ga Young at the hospital until late at night. The next day, Ga Young disappears and despite asking the officers, they don’t know her whereabouts. Meanwhile, Jung Sook’s grandfather’s Elder Kwon is planning to attend Jung Sook’s grandfather's memorial service, and with time to spare, she takes Elder Kwon to sing karaoke.