1939 summer, in Shanghai, japan. Wang Mutian and the seven boys of the same age of sixteen years of age for their naive Anti Japanese movement. Wang Mutian's fiance, Hong Wangnan, is an engineer of the Kuomintang air force. He secretly returned to Shanghai network aircraft manufacturing personnel for the central aircraft manufacturing plant to produce fighter output. At the same time, Wang Mutian's cousin sang Xia from Singapore to Shanghai. In fact, the mulberry Xia is an impostor. She is a member of the Communist Party, her purpose is as the New Fourth Army from overseas to buy drugs and other substances through a channel. In the Xia sang lead, Wang Mutian from a patriotic youth ignorant gradually grow into a staunch revolutionary fighters. And in this period of time, the royal family and the young people, but also through a variety of wind and rain test, embarked on a different path of life.