(n) The pleasant, earthy smell after rain. --- What would you do if someone told you that they knew all your fears? What if they said they know you more than you knew about yourself? --- When a handsome young man moves in next door, May is surprised to find him knocking on her door, asking to become a subject of his 'experiment'. Filled with suspicion and curiosity, she follows his lead around. Until she finds out his secret. And so adventure ensues.

Hye Won is an anti social girl and the fact that she's an orphan doesn't boost her confidence either. She's never felt loved. She's never felt cared for. Well, I guess it's understadable as her parents died in a car crash when she was 6. She's had to do everything herself. Hye Won believes that love doesn't exit. That happiness doesn't exist. She believes that everything she lives for is just an illusion and it'll slowly all fade away. But that all changed when she met Chanyeol. Always with a bright smile on his face, he slowly but gradually finds a way to make Hye Won believe that love and happiness are the two best things in life.