Ji Eun, a young and healthy girl, who suddenly i exposed to heart cancer.  Ji Eun wanted to do one thing before her last days are over, and that's to spend the last moments with the boy she loves. Kikwang, A broken and cold hearted guy, life changes when Ji Eun enters his life. But what will happen when she tells the truth? How far will this love go on? But Ji Eun is determine to not go another day wothout him till her last days.

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Plans to do till new years eve:

1.Make him forget about her
2.Confess to him
3.Call him for at least five hours straight
4. Pass notes in class
5. Make him walk you to school and home
6. Hold his hand
7. First date
8. Kiss his cheek
9. Invite him to dinner with family
10. Watch the stars at a field
11. Have my first kiss
12. Tell him you love him
13. Couple rings
14.Tell him the truth
15. Chase after him again
16. Get him back
17. The proposal
18. Wedding
19. Serenade to him one last song
20. Tell him goodbye