It is a story about the Chinese police who intelligently and bravely fight with the cooperation of the factory's Party Committee and the masses, against the spies, who steal the navy's equipment "Hunting No.99".

A young girl gymnast is killed in a car accident and a government driver confesses his drunk-driving to the police. But a chief justice finds out that the real culprit is the son of a high-rank official.

Five soldiers of the Eighth Route Army fight heroically to cover the evacuation of local people from border area between Shanxi and Hebei provinces as the Japanese attack.

A set of ancient Chinese chimes are kept intact and whole throughout the Northern Expedition, WWII, and Chinese Civil War.

Hunan boy Zhu escapes from local tyrants chase, joins the Hunan troop and gets promoted soon. The superior recommends Zhu to the military school where he meets undercover CCP Cheng Kang. Zhu participates in the Northern Expedition after graduation and joins CCP later.