lurking in the Kuomintang troops in our military intelligence officers Xiao Jianqiu , assume for the army to cross the river of intelligence task. His battle of wits with the enemy in the sinister , unyielding , well done this impossible task .

in March 1949 , the Chinese people's liberation war has entered a decisive stage of the Communist Party of the KMT's strategy . The CPC Central Committee decided to launch the arrival of a campaign . River County , difficult terrain, the presence of four divisions of the KMT elite troops . The vanguards of the leadership of the Third Field command in order to know ourselves , reducing the loss of crossing the river , has been lurking within the KMT more than a decade , code-named " Osprey " underground party members Xiao Jianqiu ways to the river , the defensive works of the Kuomintang forces intelligence delivery Jiangbei . Accident , the KMT at this time , the temporary redeployment of a special working group came to the river . One important task of this working group is to remove hidden in the river of the Chinese Communist Party organizations and underground party members . The Working Group on a river on the slaughter , bloody , and many Communist Party members and innocent people being killed . Xiao Jianqiu only contact so sacrifice. Xiao Jianqiu their situation precarious is the KMT veteran spies to try to re-establish the contact line with the organization on the one hand , to help our army crossing the river investigation group and county party committees to identify hidden spy war imminent , Xiao Jianqiu 's less and less time ....