After being dismissed from his prior teaching post due to an improper liaison with a student, Simazu accepts a temporary role at an elite academy known for its discreet operations. For six months he maintains a low profile until the deputy principal summons him with an unexpected proposition: oversee the specialized correction of select problem pupils in exchange for a permanent position. Unable to decline, Simazu steels himself and begins the assigned sessions, where conventional instruction quickly gives way to more demanding forms of discipline. His performance will decide whether he earns the academy’s full trust or remains disposable.