在这部福冈剧情片中,海骁和宰文大学时本是极要好的师兄弟，均是戏剧社的骨干成员，但二人却因为喜欢上同一个女生而分道扬镳，再也未曾相见。随着时间的流逝，在首尔经营着一家二手书店的宰文已近中年，大学时候的事情不仅没有淡去，反而越来越频繁造访他的记忆。而神秘少女素丹的闯入，更是改变了他的生活，促使宰文和素丹一起远赴日本福冈寻找海骁。在宰文、海骁和素丹又一次的三人行中，往昔被一点点打开，又不知能否真的被化解……
Hae-hyo and Jea-moon were very good pals in college, eventually going their separate ways after falling in love with the same girl. They have not seen or heard from each other ever since. As time passes and Jea-moon approaches middle age, the memory of his college life becomes ever more refreshed, and begins to haunt him more and more frequently. At this moment, a strange girl, So-dam, not only intrudes into his quiet second-hand bookstore, but also disturbs his life, urging him to set out on a long journey to Japan to look for Hae-hyo. In Japan, when three of them finally meet in a local pub, can the problems of their past be reconciled?
梦游人。3是多么一个尖锐又坚固的数字。有意思的BJIFF字幕。乡愁是一场永远醒不过来的梦游。中国电影资料馆张律福冈映后交流。《福冈》：那个魔幻的张律电影世界又回来了。可爱有趣的都市荒诞。幽灵视角下的都市漫游。《福冈》：语言和鬼魂。《福岡》--- 劇情片情感空間詮釋的新自由。
