MainCharacters

|| Im Yoona || Xi Luhan ||
 

Im Yoona. The professional, seven years in a row top secret agent in all of Korea. Always did her missions perfectly, flawlessly, splendidly, impressively. Hard to open to other people, especially the ones she view as 'annoying' and 'noisy' and 'boys'.

Xi Luhan. The newest secret agent, but then being one of the brightest secret agent Korea ever had. Paired with the professionals aka Yoona and her gang. Bubbly, cheerful, noisy, always optimistic and always into other people's businness.

Can these two person with an earth-sky personality click with each other and probably... fall in love?

HelpingCharacters

|| Seohyun || Siwon ||

Both of them are Yoona's team mates. They are used to Yoona's cold and straightforward attitude.
They have been best friends from a long time.

What will happen if Seohyun really wants to make Yoona and Luhan like each other while Siwon wants to seperate them?

because love can go against all odds.