In primary school till middle school, Jessica and Sooyoung were always competeing against each other. They considered each other enemies. Until Jessica's family moved to America, leaving her friends and rival behind. While in America, she met Tiffany and they became best friends. Now, Jessica is back in Korea and she had brought Tiffany along with her. However, after being gone for 4 years, what does fate have in store for Jessica and her rival after they meet again?