cast: kim ha-neul; kang shin-il; kim hyeong-beom; domashchenko vadym; cody hunter; elizabeth sujin ford; iliana goutsou; lee yu-su; kim seung-hun; yu seung-mok; park seong-min; kim jung-suk; kim hyeong-jong; jeong woo-hyeok... synopsis: secret agent ahn su-ji works undercover as a bride-to-be real estate agent. her real life boyfriend jae-joon is completely distraught over su-ji's frequent absences and even harder to believe excuses. jae-joon then decides to leave her and for that matter the country of korea itself. he calls su-ji one last time at the airport incheon international airport, but unfortunately su-ji is unable to answer his call because she is working undercover to bust an international crime organization. three years later, with jae-jun long gone, but not forgotten su-ji works on a russian mafia case involving biological weapons. during her undercover work, su-ji poses as a janitor and runs into jae-joon while cleaning the men's restroom. su-ji completely loses her composure and attacks jae-jun for leaving her and apparently lying about his whereabouts. meanwhile, jae-joon has his own secrets. jae-joon is also a secret agent, but works in a different department from su-ji. when jae-joon left korea three years ago, he was actually assigned to track the very same russian organization that su-ji is currently working to bust. now that the former lovers have met again they resume their romantic relationship, while trying to keep their real identity unknown to the ...