Kang Eunjae, now 27 and about to get married, recalls his college memories and the regrets that came with losing the only person he truly ever loved in his life. And... it seems like the flame that kept on going for so long was about to explode by meeting a person from the past.  Little by little, distant memories will help Eunjae as he uncovers the truth of the disappearance of his lover - Cha Wonwoo.