Kim Ha Eun (SinB, Gfriend)is a high school girl. While, Cha Se Jun (Cha EunWoo,ASTRO) is a star. 

Kim Ha Eun and Cha Se Jun have been childhood friends since they were in elementary school. They were parted away when they were both about to go into middle school together. They both made a promise that one day, if they meet each other again, they would get married. Find Out If they Do Meet.....