On May 22, 1949, Communist agent Kou Xuewen and his comrades broke into the Kuomintang Qianshan Defense Command and successfully launched an armed uprising, captured the Fengxiang's garrison commander-in-chief.

Three families living at the foot of the ancient city walls of Xi’an survive through old traditions and embrace the changes of the new era. In their own way, the different families struggle, adapt, grow, and finally find their way of happiness as the old walls become the intersection of parallel lives.