After another soul-crushing day at the office, Chaesu wakes up inside the world of Campfire Friends, a cartoon he used to watch as a child. As he spends more time with his colorful woodland pals every night, he begins to regain his lost childhood innocence. But behind their cheery kindness hides a chilling secret...
Mysterious black circles have started appearing all over the world, and whoever falls in doesn't come back out. Then one day, a black circle swallows an entire school and everyone in it, turning it into a twisted maze of nightmares. Will Doyun and his classmates find a way out?