
A man and a woman whose lives are shaped by loss and time drift apart in youth and reunite a decade later, discovering that the bond they once shared remains a guiding light through love, grief, and growing up.






Yeon Tae-seo heads to the countryside with his younger brother to stay with their grandparents. There, he meets Mo Eun-a and the two form a special bond.
Tae-seo and Eun-a's relationship continues to blossom, progressing from romance to intimacy. But adulthood soon separates them, testing their connection.
From school to relationships and work, Tae-seo struggles to juggle his responsibilities. Meanwhile, Eun-a's career begins to reshape her life.
Ten years later, Tae-seo and Eun-a live completely different lives. One day, they cross paths again by chance — stirring old feelings.
After running into Eun-a again, Tae-seo looks after her out of concern — but unresolved feelings keep things awkward between them.
Eun-a and Tae-seo slowly settle back into their rekindled rhythm. Meanwhile, they both navigate challenging personal and family issues.
Despite help from Bae Seong-chan, Eun-a struggles to find her place in the world. Tae-seo deals with unease as he confronts his family's health issues.
Eun-a makes a decision that forces her and Tae-seo apart again. Soon after, a major misunderstanding leaves him heartbroken and betrayed.
Before long, Tae-seo's life returns to how it was before he reunited with Eun-a. But the question of why they broke up still lingers in his mind.
Eun-a decides where she will go, while Tae-seo decides how to say goodbye. Will their love endure -- even until the very last moment?