Taemin just moved into a new town with no one but his family. Feeling lonely and angry from the new move, he climbs to the roof and let’s his emotions out about leaving his old home and friends. The next day when he goes up again, a letter from an anonymous person is there, penned from K.J. Moon.

"The string develops as your personality develops, eventually connecting to your soulmate. They may not be your perfect match, but they will be what you need." Jimin is someone who can see the red string of fate. He doesn't know when it started, but it is something that only he can do. He is also a college student who faces many struggles. What happens when his string is connected to someone he would never expect?