In October 1948, the East China Field Army relentlessly pursued the remnants of the Kuomintang to the outskirts of Dong’an City. Victory hung heavy in the air. Amidst this pivotal moment, Lin Zhonglun, a covert intelligence officer of the Communist Party of China operating deep within enemy lines, stumbled upon the city's crucial map. This vital intel, entrusted to his trusted assistants Feng Guansheng and Fang Xiulan, became the key to the city’s liberation. Yet, the euphoria of victory was short-lived. Hardships and challenges, like a relentless tide, followed. But Feng and Fang, their hearts forged in steely resolve and unwavering faith, weathered the tempest, ultimately emerging from the war as true heroes.