Han Taejoon, popular for his tall stature and good looks, is also a notorious troublemaker at school. While skipping group activities on a school trip, he crosses paths with a beautiful girl named Jisook and instantly falls in love. Despite his best efforts, Taejoon fails to find her again. As the new school year begins and his thoughts still consumed by the brief encounter, fate takes an unexpected turn when Taejoon finds himself in the same class as Kim Jiwoon. Jiwoon bears an uncanny resemblance to Jisook and even smells just like her. Could he be Jisook's brother...or maybe a cousin? It appears that there is more to this new classmate than meets the eye.