Set in the days of Anti-Japanese War. Doctors of Humanity Hospital save a wounded patriot, but the event is informed to Japanese secret service. How can the wounded be rescued finally?

This movie accurately describes the accomplishment of chief hydraulic engineer Mr. Bing Li 2500 years ago, and his name is used as the title of this movie.

In the winter of 1948, two high-ranking Nationalist officers plan to defect to the Communist side.