The main character, Zhang Zaikun, has been able to see frightening "monsters" that everyone else can't see ever since he was young. However, he was never afraid of them. He has always been deeply attracted to them instead. He realized that he has genuinely taken a liking to them. One day during high school, he encountered the manager of monsters by coincidence and received an invitation: Manage a "prison" where plenty of monsters live in, find the monsters that have lost themselves in the human world, and bring them back!

Original Webtoon

Since childhood, the protagonist could often see terrible “bizarre” creatures that no one else would see throughout lifetimes. Yet, he was never afraid. Instead, he was drawn to those bizarros and grew an attachment to them. Then one day in high school, he happened to meet a bizarro monitor and receive an invite to manage a prison that houses countless bizarros, as well as track down the ones who went lost in the world…..