Hello, a young boy named Chao who uses a wheelchair is thrilled to attend school and socialize with peers his age. However, upon arriving in his homeroom class, he discovers that reality appears distorted. The students gradually come to the realization that their teacher is actually a monster hiding beneath a disguise. This monster teacher has the power to impose severe consequences on any student who fails to provide the correct response to a question about punctuation. Can any of the pupils solve this puzzle before it's too late?