Based on the animated film "King of Pigs" by Yeon Sang-ho. A thriller drama that tells the story of the people who brought up the ‘memory of violence’ through serial killings which started through a friend’s message 20 years ago.

Being bullied at school and suffering violence at home, Mi-rae, a middle school loner, lives on the border between reality and fantasy. The only places she feels restful are the computer game world, and the would in the novel she writes in her notebook. As her classmates Baek-hap and Tae-yang come close to Mi-rae, she gradually opens up her mind to them. In the meantime, the computer game service is terminated, and the world in her novel also disappears, leading Mi-rae to face a tough reality again.