It tells the story of global campuses being locked down by mysterious forces, and all teachers and students being drawn into a special survival trial. The original rules of the campus are completely reset. Each class will give birth to a hidden monitor who needs to choose daily class trial tasks, and completing tasks can obtain survival supplies. Freshman student Gu Pingsheng accidentally becomes his class monitor and awakens the special ability of invisibility and etherealization. Hiding his identity in the perilous campus, he weighs every task choice, unites companions around him, fights external threats, and strives to find a way out to survive in the cruel trial environment.