Life has no happy endings.

"I love him...

...but he loves someone else...

...I don't want to be the antagonist in his life...

...why does love hurt?"

After Son Naeun (You) was saved by a mysterious guy from being kidnapped by a gang, she wasn't able to sleep for nights because she was busy thinking about the guy who saved her.

Finding out that the guy who saved her was going to be her new seatmate in class, she started having a crush on him...

...only to find out he loves someone else.