Two people are believed to be destined for each other, connected by an invisible red string. The red string may stretch and tangle, but it never breaks, eventually bringing two people together.

There was a girl in school, popular amongst the others. Shiny hair, healthy skin and a radiant smile. She was always surrounded by people, known for her truly kind heart. She excelled in all of her classes, getting nothing but good grades without too much effort.

There was also Roh Jae-won. He was an intelligent and quiet boy and was considered an outcast by his peers. He was more reserved than the rest, he kept to himself and wasn't ever seen talking to anyone in school. He got made fun of for his looks, for his very poor fashion taste and unique interests that one would consider nerdy..

Most people have already found the person on the other side of the invisible string. She couldn't help but feel anxious about why she hasn't found hers yet.. Though everytime she passed Jaewon, she felt a strong pull against him and a flutter in her stomach that was hard to ignore..