In the play, the liberation of Chengdu in 1949 as the background, tells the story of Peng Gang Wu Peixin, the identity of opposites in the new couple agent China was established on the occasion of the story of grief at separation and joy in union. 1949 autumn, in Chengdu, Peng Gang, Wu Peixin and her daughter Doug the happy family of three ushered in a crisis. The couple had left the front side by side in the war against the enemy. Love life and death crisis and become husband and wife. Who knows after the victory of the war, then transferred to the civil war, Peng Gang burn, because he was a member of the Communist Party, he could not at gunpoint in his comrades, he disguised himself so decadent, relegated to people a complacent state after. At the crucial moment in the liberation of Chengdu, Peng Gang was found by the party organization, and he acted immediately. Who knows his wife is caused by the change of doubt, Wu Peixin is awakened, for many years is strange bedfellows, she is afraid of losing her husband, afraid of losing family, so she spied on by Peng Gang, to carefully set the trap for all interference Peng Gang, he even cut off all contact with the outside world. In the dark the Peng Gang doesn't know, he walk into the organization have given their own tasks, risking their lives, resolve all sorts of obstacles, desperate, with their lives to defend their mission and belief, ushered in the liberation of Chengdu.