A crowdfunding app, Ultari, lets users hire fixers called Fencers to take down bullies. Kyuhyun, tired of being tormented, funds a campaign and enlists the help of a Fencer named Inseong.

However, when Kyuhyun uncovers Ultari’s secrets, he becomes a target himself. Now hunted by both Ultari and vengeful bullies, his only way to survive is to become a Fencer.

With Inseong’s training, Kyuhyun is drawn deeper into the violent world of Ultari, forcing him to question whether he’s escaping the system—or becoming part of it.