Starting from Shanghai in the 1940s, it tells the story of four women, Su Yudie, Lin Qiuyan, Xu Jingwei, and Zhao Manli, who formed the "Four Spring Sisters" because of music and started their singing careers at Paramount. They have experienced the turmoil in Shanghai, the changes of the times, career blocks, and love twists and turns, but they have always stuck to their music and friendship.
The four male protagonists, including Shen Wenxuan and Lu Jingming, grew up together and faced difficulties together. In the later period, the four sisters each showed their talents, either deeply engaged in education or devoted themselves to creation. They even founded the "Spring Voice Cup" singer competition to cultivate new stars such as Lin Xiaomei. The story spans half a century, inheriting the "Spring Spirit" in the form of musicals, charity and other forms, and finally writes a warm chapter of friendship, love and music passed down through the years.