Min-gyeol has an unrequited love for Tae-eun, the younger brother of the owner of a regular cafe. She is suddenly asked to deliver a letter from Tae-eun. It turned out that the letter was a suicide note. Min-gyeol, who suffered the death of her friend last year, decides to wait with Tae-eun in hopes that she will be of help to Tae-eun.
Mingyeol is a happy-go-lucky twenty-six-year-old girl who recently quit
her job. With extra time on her hands, she spends her days crushing on
Tae-eun, a cute boy who works at her favorite coffee shop owned by
Tae-eun’s older sister Huiyeon. Mingyeol stops by every day despite
Tae-eun’s lukewarm reactions. What seems like a lucky break finally
arrives when he asks for a favor. He hands her a letter, asking her to
give it to Huiyeon a week later. Though puzzled, Mingyeol is willing to
cooperate, but her own sister tactlessly opens the letter and announces
the alarming news: it’s a will! When Mingyeol confronts Tae-eun, he acts
like he doesn’t remember anything at all. Mingyeol is now armed with a
mission to save her crush, but will he open up to her and tell her
what’s wrong?