Haixiao and Jae-moon were very good brothers in college and were both backbone members of the drama club, but the two parted ways because they fell in love with the same girl and never met again. With the passage of time, Jae-moon, who runs a second-hand bookstore in Seoul, is nearing middle age. Not only has the things from college not faded, but they have visited his memories more and more frequently. The intrusion of the mysterious girl Sudan changed his life even more, prompting Jae-moon and Sudan to go to Fukuoka, Japan to find Haixiao. In another threesome of Jae-moon, Haixiao and Sudan, the past has been opened up a little bit, but I don’t know if it can really be resolved...