A deep feeling lost in the torrent of the times, a fateful elegy written for the unknown.
Shanghai in 1934 was an isolated island filled with brilliance, but also an abyss of turbulent undercurrents. Song Yingying, a progressive female student from a scholarly family in Jiangnan, came to resist the arranged marriage. She is like a firefly, eager to light up herself in the darkness. At a banquet, she met Shen Jinyuan, a young talent from the General Administration of Customs. He is as gentle as jade, but seems to have deep and unfathomable depths. An unexpected encounter allowed Song Yingying to glimpse the secret fragments hidden under his calm surface.
When you get close to him, you get closer to danger and closer to the truth. Under the cloud of national peril, the two gradually approached each other through temptation and attraction. However, as an underground worker "Blue Bird", Shen Jinyuan's world is full of lies and sacrifice. In order to complete the task, he had to compromise with the singer, and was even forced to accept a benefit engagement. Next to Song Yingying, her fiancé Gu Weisheng, who had returned from studying abroad and was committed to saving the country through science, also appeared, providing her with another bright but stable future.
In the struggle between love, ideals and family and country beliefs, the two have experienced countless tests. With the outbreak of the Anti-Japanese War and the fall of Shanghai, their feelings were most intensely confirmed in the flames of war, and they also ushered in the cruelest separation. Shen Jinyuan shouldered the mission and dived deeper into the darkness, leaving only a promise of "waiting until the war is over".
Song Yingying held on to this love with her long wait and the pen in her hand. However, when the dawn of victory finally came, what she was waiting for was not a reunion, but the news of the death of her lover who sacrificed his life and died generously.
