It tells the story of Cheng Liang, an engineer who lurked in the Japanese arsenal in Shenyang during the Anti-Japanese War. He secretly tampered with the fuse parameters of artillery shells every night, disguising damage as reasonable loss. When the Japanese military inspector intensifies his review, he must complete a precise and dangerous "performance" on the assembly line, use his professional knowledge to protect his conscience, and let the weapons of destruction become silent amidst the roar. This is a secret battle without smoke but a matter of life and death.
