Jungkook is an average schoolboy. He gets good grades, he's athletic, but he's extremely shy. He has a crush on his teacher Mr. Kim, but he knows he will never be with a teacher, that's just not possible. However, on his eighteenth birthday, his friends drag him to a strip club to celebrate him becoming an adult. Then he finds out his teacher doesn't just give lessons on history, he has a very special night job, and goes by, Mr. Kitten.