The mother of Maeng sisters turns out to be the Agent of Love who introduced Soon-duk to her late husband. Jeong-woo confesses his feelings to Soon-duk, but Soon-duk doesn’t accept them and tells him to forget about her. Meanwhile, Lady Yeoju gets falsely accused of the murder of Jo In-hyun eight years ago, so Lieutenant Jung and Jeong-woo look into the case to help her.