Nari was only 11 when the goverment came to take her away. She was expose to a deadly gas that the North Korean military was testing near her school.  The gas killed everyone exept for Nari and one other student (Youngjae). When the goverment found out that the gas was defective to the two, they searched North Korean for the surviors to experiment on them. After

Everyone knows the fives senses, sight, touch, smell, taste and lastly hearing. But 20 year old So Min is lacking one of them. She is deaf. She has been deaf ever since she could remember. So Min was in a fatal car accident when she was only 7 years old. Her parents died but she lived but her hearing disappeared along with all of her memories due to damage to her brain. She managed to pass school without making friends but one day that will all change for her.   

It was the best days she could have asked for. But it all fell apart in a matter of minutes. Caught in the middle. No escape. No where to hide. The best turned to worst. Hard decisions are going to be made. You don't know who to be more scared of.