A fat highschool girl, Park Hye In who neither had the looks or body like the kingka of the school- Nam Woo Hyun. She never intended to confess as she knew the outcome is definite- Rejection. That day, she was teased by her crush and laughed badly by the students. She sat on the bench, crying her heart out. Then, a blue crystal fell from the sky and landed beside her. Picking it up, a voice sounded, "Make a wish. It will last for the day." Immediatedly, she placed her hands together and wished, " Please... Make me slim and pretty... even if it is for a day." As though miracle happened, she shrunk. She became really skinny and pretty.

Touching the reflection and her face, she asked, " Is this me?" .