故事发生在中国的一个演讲厅内，一位西方音乐教授将要进行一场关于歌 剧音乐的演讲。 然而在演讲过程中发生了意外，翻译误喝了清洁阿姨的放在水瓶里的清洁 剂，导致无法继续翻译，控制台短路，场面混乱，使得演讲难以继续。 在紧要关头，清洁阿姨用自己的歌声化解了这一意外，也拯救了这场演讲。

The story takes place in a lecture hall in China, where a Western music professor is about to give a speech about opera music. However,there is an accident during the speech. The translator mistakenly drinks the cleaning agent in the water bottle put by the cleaner, leading to impossible to continue the translation and the short-circuited console. The scene is chaotic which causes the speech difficult to continue. In this critical moment, the cleaner uses her songs to resolve the accident and saves the speech.