A love they've shared between the two of them..A relationship they've built for five years that they thought have come to an end...each of them have decided to go on their own separate ways..secrets untold..love thats been kept in the past...what happens when after two years of being apart finally met again in the most complicated situation for both of them..

Twenty-three year old, Amber Liu living with her own rules. While her parents live in LA, United States. Every months her parents send her money, not small amount. She lives alone in an apartment in Seoul, Korea. She has a friend/neighbors named, Kwon Yuri Twenty-six years old. They have known each other since Amber moved into the apartment. Yuri also have a girlfriend named Jessica. Twenty-one year old, Krystal Jung lives with her loving sister named Jessica Jung Twenty-six years old. Their parents don't live with them because they are busy with their work and they kept going overseas. Krystal lives under her sister's control. Jessica takes care of her money, clothes and food. Just like a mother.

Agent Jung Soojung, also known as Krystal, is a 19 year old prodigious spy. She is sent to America to capture and kill a supposed traitor and ex spy to the agency. This target's name is none other than the goofy and dorky, Liu Yiyun. After moving to the U.S., Yiyun changed her name to Amber Liu, to buy her some time for escape. She is somewhat mysterious and not many people know what she is thinking but one thing is for sure...she loves a good party. What will happen when these two meet and interact? Will they fall inlove like every kryber book? Or will the author ruin your lives by making Krystal kill Amber? I mean, it is a spy world, right? The number one spy rule? Never trust anyone. . . . . . . (: