1948年解放战争时期，连长谷子地（张涵予 饰）率领九连47名战士在汶河岸执行掩护大部队撤退的任务，团长刘泽水（胡军 饰）下令，以集结号为令，听见号响就撤退。
1948 Liberation War, the commander millet (Chang Han-decorated), led by Nine 47 soldiers in Timor riparian cover a large force to perform the task of retreat, head Ze water (Chang Chen) ordered to build No. Order No. heard loud retreat.
Tragic war in the roar of artillery began, Nine soldiers casualties, platoon leader Jiao Dapeng (Liao Fan ornaments), said he heard the expense of the former Assembly, millet he did not hear, he decided to hang position. Nine times repulsed the enemy attack, destroying two tanks, wiped out countless, in addition to the whole company commander millet, 47 were all killed.
The war changed the millet life. Since the army changed the number, millet can not find Organization, Nine martyrs who sacrificed also been identified as missing. Millet began the difficult to find, even for the nine brothers to have a say, as well as to ascertain the truth of the year the Assembly.