Kim Seokjin and Lee Hana has been childhood best friends when they were little until Seokjin had to move away. Few years later things had change, they got into the same college and they meet again. But those few days days Seokjin had gotten a girlfriend, Nam Bora. While Hana got into a car accident and forgot all her memories with Seokjin. What will happen when they meet again? Will she remember?