In a chaotic world, love is out of time, yet it leaves a deep imprint on the heart. In 1941, Japan deployed to invade China. Against this backdrop, three university students—Song Xiting (Luo Lin), He Wenxuan (Wu Qihua), and Dajima Masao (Lin Baoyi)—develop a tragic and moving love triangle. Xiting, Wenxuan, and Masao were originally good classmates, but Wenxuan and Masao secretly see each other as rivals while both harbor feelings for Xiting. Because Masao is Japanese, he faces rejection from the public at that time. However, Xiting overcomes prejudices and falls in love with Masao, only for Masao to be forced to separate from her when Japan withdraws its citizens. Wenxuan fervently pursues Xiting, and through the trials of war, they discover their true feelings for each other. It doesn’t take long before Wenxuan is arrested by the Japanese army, and Xiting even risks herself to save him. In the end, due to national crisis, Wenxuan chooses to join the army and leave Xiting behind. The ravages of war cruelly separate Xiting, Wenxuan, and Masao. However, fate brings Xiting, Wenxuan, and Masao to a reunion on the battlefield...
