Kim Myungsoo and Park Jiyeon liked each other.
They were, Blinded by love. Selfish for love. And lastly, in love.
But... They started growing apart.
The next day, Jiyeon commits suicide. 
Myungsoo almost wanted to die too knowing about the news. 
He got drunk and got into a car accident. 
Which caused him to have amnesia and become cold.
A year later, Myungsoo and Jiyeon saw each other, but they don't remember each other. 
Instead they developed a hate relationship.
They both work at the police station, and his memories slowly start coming back. 
He remembers Jiyeon, but she changed.

He saw her funeral himself. 
And he even saw them carry her.
He wonders.. Just what is.. "The Answer?"