Su Tang is fluent in five languages. After being treated as a free translator at her previous company, she joins Gu Group and claims to speak only English. Three years ago, during her interview, CEO Gu Yanci overheard her praising his good looks in German. He secretly taught himself four foreign languages, deliberately using imperfect pronunciation to test her. When the entire translation team suffers food poisoning and no one is available to interpret for negotiations with five countries, he reveals the interview footage, exposing Su Tang's secret. She takes on five countries' interpreting teams alone, translates flawlessly, sees through their traps, and helps the company negotiate an additional seven percent. Once the truth comes out, the two honestly confess their feelings. Su Tang signs an exclusive translation contract with the CEO and agrees to teach him five foreign languages. In the end, they fall in love and no longer hide who they really are.