Zhang Nengliang, a rich boy, failed in the college entrance examination. He was repeatedly mobilized by his grandfather Zhang Youliang to join the army and chose the most difficult tank soldier in the army. Zhang Neng is active in thinking, good at reverse thinking, and often does not play cards according to common sense. I thought that with his intelligence and physical quality, I could temporarily show my talents in the army, but I didn't want to meet my old enemy. Zhang Neng and Yu launched a duel for two years. The monitor Niu is a rural soldier. His biggest dream is to be admitted to a military school, but because of Zhang's energy, he missed the military school twice. Finally, in the energy contest with Zhang, the two men changed from bitter rivals to close comrades-in-arms on a chariot. The tomboy Huang chose her favorite tank soldier. With her own efforts and unremitting efforts, she finally boarded the armored vehicle and became the first batch of real female armored vehicles. The "Three Musketeers of Tanks" composed of Zhang Neng, Niu Gong and Yu are invincible and have achieved excellent results many times. Finally, they entered the field of vision of Zhou Deyou, the deputy commander of the army, and were sent to the tank factory to successfully complete the test task of the new tank.