Seo Joohyun or Yoo Rachell ( the name she gives to herself ) is a sasaeng fans of Mark a member of one of the famous boyband in South Korea named GOT7,she's a high-tempered girl,rude,and clumsy girl.She never wants to listen to other people especially her parents who always lecturing about her ''extreme fangirling''.She decided to quit school to focus on her fangirling,she also decided to live by herself in a small apartement with her fellow friend named Eunji.She only visit her parents when she needs money,she never really love her family except her grandfather.She just wants to talk with her grandfather because in her eyes,her grandfather is the only person in this world who could understand her true personality she really loves her grandfather that's the reason why she really stressed when her grandfather passed away.

Xi Luhan is a heir of an electronic company owns by his father,his father wants his only son to inherited his company but Luhan doesn't have any interested in his father company,he really wants to be a singer rather than a heir.Then,he ask his uncle who owned the biggest entertainment company in South Korea if he could become a singer,then his uncle recommended him to join his company then Luhan was trained for about 2 years and then he officially debuted as one of the member of rookie boyband named EXO

What will happen if both of them meet?

How will they react when they found out that they meet long time ago?

And Will they found out the big secret who'll change their live upside down?