During a military exercise in the 1980s, Qin Yusheng, a pilot of a certain unit of the Chinese People's Liberation Army Air Force, accidentally lost contact with other units while using a new anti-radar search technology. He completely disappeared from the sight of all radar and communication equipment, and traveled to the North China battlefield during the Anti-Japanese War. After shooting down a Japanese plane, he was forced to It landed at the Li Yunlong headquarters of the Eighth Route Army. The young Japanese pilot Jiro Yano parachuted out after being shot down. After that, he searched hard for this mysterious fighter plane. Finally, more than 50 years later, when he visited China to visit the history of China's military development, he saw this fighter plane used by China in the 1980s, and found the pilot Qin Yusheng to become a friend...