He had been on a string of unsuccessful blind dates with various women when Soo-young accidentally throws garbage on him while she is on her way to school.
When she and her best friend, Da-Jung, run into Yeon-woo on the train, she asks him to give her his tie, which cements their friendship.
Kang Sook goes off to fulfil his mandatory military service, and returns a changed man.
And at first, she does not return Kang Sook's feelings for her, but she soon starts to date him, though is shocked when he kisses her, as she is still struggling with her boyfriend's death.
Soo-young's mother, an eccentric woman who raised her daughter singlehandedly after her husband left them some years ago.
Directed by Ryu Jang-ha, the film deviates a lot from its source material but keeps the webtoon's primary themes intact.