In the Shanxi-Sui border area in 1943, the Japanese ace tank regiment pressed on the border. In a desperate situation, Zhao Tiezhu, a soldier of the Sharp Knife Company, used a bayonet to pry open the tank hatch and threw in a grenade to blow up the enemy vehicle. From then on, the entire company focused on the hardest nut to crack - Masao Yamamoto's squadron. Company commander Lin Zhan formulated a serial ambush strategy, Wang Debiao, who escaped from the arsenal, modified landmines, underground party member Chen Huaiyuan delivered a secret report, and female military doctor Zhou Xiaoya used a scalpel to modify medical bombs. A deadly battle between homemade weapons and steel beasts started at the foot of the Taihang Mountains.
