The cast of "Heroic Sons and Daughters" mainly consists of Liu Shilong, Liu Shangxian, Tian Fang, Chu Dazhang, Zhang Zhenhua, Jin Zhengtai and Tian Ling.
During the anti-U.S. war against North Korea, Wang Wenqing, the political commissar of a division of the Volunteer Army, went to the front line to inspect the battlefield, where he met Wang Cheng, the son of his old comrade Wang Fubiao. Wang Cheng told Wang Wenqing that his sister Wang Fang was also in the army. Later, during a battle, Wang Cheng died bravely, and the whole army launched a campaign to learn from Wang Cheng.
Wang Fang, a member of the civilian troupe, took on the task of publicizing and singing about heroes, and the "Hymn to Heroes" inspired the frontline soldiers. When Wang Wenqing saw Wang Fang, he recognized her as his own biological daughter who was separated eighteen years ago. In order not to affect Wang Fang, Wang Wenqing restrained his feelings and did not recognize his daughter immediately, but encouraged her to learn from her brother.
On one occasion, when Wang Fang was singing in a position with a cultural troupe, she was attacked by the enemy, and in order to cover the cook, Wang Fang was wounded and sent back to her homeland for convalescence. Later, Wang Fubiao came to North Korea with a condolence delegation, at which time Wang Fang had also recovered from her injuries and returned to the army. She met with Wang Wenqing, Wang Fubiao told Wang Fang about the past eighteen years ago, Wang Fang realized that Wang Wenqing was her biological father, she was very excited. Wang Wenqing encouraged his daughter to be a successor of the revolution, and that's when father and daughter were finally reunited.