A spoiled, rich and entitled brat is the title that Bae Joohyun, Irene, claimed. When she is forced to go on a business cruise with her sister Jisoo, and high class family, she feels nothing but dread with the claim; "waste of time". Obsessive and possessive with the thought burned into her mind, she can't help but question it when she meets an innocent and oblivious crew member, Kang Seulgi.

Kang Seulgi and Bae Joohyun met during their trainee days, creating an unbreakable bond with each other. "This is the journey of a Pretty Girl and a Charismatic Girl finding their own paths together, searching for their true selves and happiness. A friendship that is destined to last forever and a mix of each heart to make a perfect love story."

A rich famous model named Irene was once friends with a girl name Seulgi who was now the #1 top secret agent in Seoul. They were each other's childhood best friend. After years of not seeing one another, Irene finds out that Seulgi has no idea who she was due to a car accident and in result of her getting "amnesia." DAILY DOSES OF SEULRENE!! UPDATES PRETTY MUCH EVERY OTHER DAY! (sometimes)

슬기 x 아이린