Set in 1950, Feng Zhiqing, a worker at the Agricultural Machinery Factory, was rushing to manufacture supplies to resist US aggression and aid to Korea. In an explosion accident, he injured his eyes in an explosion to rescue his comrades. With the care of the party and the encouragement of comrades, he used great perseverance to overcome the disease of vision loss and returned to work at the machine. On the issue of love, he was unwilling to involve his fiancé Li Sufang, who was led by Li Sufang and the factory. With the help, he relieved his ideological burden, formed a happy marriage with Li Sufang, and worked hard to produce urgently needed materials for the War of Resistance against U.S. Aggression and Aid Korea. He boldly carried out technological innovation and finally succeeded.

Set in 1950, Feng Zhiqing, a worker at the Agricultural Machinery Factory, was rushing to manufacture supplies to resist US aggression and aid to Korea. In an explosion accident, he injured his eyes in an explosion to rescue his comrades. With the care of the party and the encouragement of comrades, he used great perseverance to overcome the disease of vision loss and returned to work at the machine. On the issue of love, he was unwilling to involve his fiancé Li Sufang, who was led by Li Sufang and the factory. With the help, he relieved his ideological burden, formed a happy marriage with Li Sufang, and worked hard to produce urgently needed materials for the War of Resistance against U.S. Aggression and Aid Korea. He boldly carried out technological innovation and finally succeeded.

大革命时期，知识青年靳恭绶（于洋 饰）、顾达明（简瑞超 饰）、杨如宽（杜熊文 饰）、余宏奎（刘冠雄 饰）因为各自不同的原因离乡相遇，在济南结为拜把兄弟。不久，由于出身信仰的不同，各自走上了不同的道路，期间他们还结识了谢辉（王蓓 饰）和刘芬（吴慧明 饰）两位女学生。北伐的胜利召唤他们来到武昌，靳恭绶等人考入中央军校，师从共产党员赵锦章（史进 饰），余宏奎则投奔了国民党参谋薛建白（林岚 饰）。四一二反革命政变后，国共分裂，蒋介石大肆捕杀共产党人，“马日事变”暴发后，已经加入共产党的靳恭绶和顾达明闯入敌营救出身受重伤的赵老师，并遵从赵的遗训回武汉找党，而余宏奎则在大革命的风囗浪尖上彻底投降了敌人......

Set in early 1960s, the police prevents spies from destroying city infrastructures before the National Day.