The eldest daughter, Mecano, is not only recognized as the most beautiful girl in the school, but also the topic queen among the most influential people. She and her equally well-known boyfriend Su Huan are recognized by the whole school as the best couple. Ji Ya never thought that one day she would get to know the senior sister she had always respected and admired due to various coincidences. However, the closer she got, the more she discovered that the senior sister might not be who everyone heard. Until one day, the senior sister broke up with her boyfriend, causing a sensation in the whole school. Su Huan found Jiya, and only then did Jiya find out about Mecano's most unknown secret hidden among the crowd.