In the late 1970s, the aviation industry of the Republic of China was facing unprecedented difficulties. The turbofan engine project code-named "Kunlun" has repeatedly encountered obstacles, casting a heavy shadow on the entire country's blue sky dream.
Lu Chengzhou, the former favored son of heaven who was transferred to Shuguang Machinery Factory in Hongxing City, was like a forgotten star in this dusty corner. He possesses knowledge that transcends the times and outstanding mechanical talent, but he can only polish the most common parts at the lathe day after day.
A thrilling test drive failure pushed him to the forefront. He single-handedly fought against the doubts of the entire factory, using drawings and deductions to reveal the fatal flaw in the heart of "Kunlun".
From a marginalized young worker to taking up the banner of the entire engine improvement project, Lu Chengzhou's counterattack was a struggle against personal destiny and the epitome of a generation of military workers. Around him, there are Jiang Wanting, the daughter of the chief engineer who questions him and a skilled craftsman, old craftsmen who are both teachers and friends and love their talents as much as their lives, and a group of young people who, like him, are willing to dedicate everything to the roar.
Facing the iron walls of technological blockade and the numerous internal resistances, they used their hands as swords and their wisdom as light, igniting a flame called "hope" in the simple factory building.
This is a story about quenching and rebirth.
When the roar of the engine finally resounds through the sky, the scalding track that cuts across the sky will be the unyielding backbone of a nation and the inexhaustible burning youth of a generation.
