On the day when the school boss Jiang Xu used the silent transfer student Lin Yu as his stand-in, Lin Yu said nothing and just used perfume to write "You all should be remembered" on the school bulletin board at midnight. The next day, eighteen scandals exploded like poisonous fog: cheating, bullying, sexual assault, academic shady affairs, all based on the smell code to identify the real culprit. Jiang Xu finally understood that the person he was locking was not the substitute, but the only person who dared to tear his mask apart. Lin Yu, on the other hand, is using fragrance as a blade to weave a hunt for the truth that no one can escape.