Life is never easy espeically when your a spy.

Kim Taeyeon, a 25 years old lieutenant who works for the Anti-Terrorist Force(ATF) in Seoul, Korea is known as one of the best spies in the force and has never failed a mission given to her before. 

But only this time, things will change.

She is given a mission to infiltrate Seoul's largest medical producer, Hwang's Medical Corporation.

Through this journey, she'll counter obstacles she never faced before and decisions that'll change her life forever.

The decision between love and her objective.

At the end of the day, will she be able to complete her mission?

"I need you to infiltrate Hwang's Corporation and found out what their up too. We've received unknown reports about them creating a deadly virus. Our force has chosen you for this mission because of your achievements and oustanding skills." 

Taeyeon looked up at her boss for a second.

"I'll accept it."

"I have to warn you, chances of you coming out alive is not high. Once you accept it, your friends and family could be in danger too." 

Taeyeon ignore what he said and put her thumb in the ink and stamped the paper. She walked towards the door and was about to leave until her boss said something. 

"Let me remind you, as a spy, the number one rule is to not fall in love." 

Taeyeon only snickered at his words.

Love was never a word in her dictionary.