十年前，見清和小曉在回鄉過年的火車上相識，懷著同樣的夢想一同在北京打拚，也展開相聚別離的情緣。 十年後，他們在飛機上偶然重逢，猶如輪迴的命運讓平行線交叉再平行，故事始終有「然後」。可是後來的他們，學會如何去愛了嗎？

Korean remake of 2018 film "Us and Them".

Jules and Chris, two adult former exes who had a bitter past, reunited 5 years after to fix their broken relationship they had when they were teenagers. As they rebuild their lost spark, differences occur when they have to confront the changes that happened to their lives and face the matured version of themselves.