Fallen City is chronicles the fates of a small-town policeman, a bank robber and a rebellious young woman in the aftermath of the 2008 Sichuan earthquake.

Five years after he fled with RMB 800,000 from a bank robbery, Liu Chuan(Huang Jue) returns incognito to the town.

Next day, Wang spots Liu in the street and gives chase, finally handcuffing him in a deserted warehouse.

After rescuing Qin, Liu finds himself roped into saving other townspeople and becomes a hero in the locals' eyes.

The script by Huang Hong (actor) and Wang Jin Ming(王金明) takes the idea of a criminal who swaps identities with the very policeman who's been hunting him for five years and develops it into a character drama in which the former unexpectedly finds an opportunity to redeem himself for the robbery he originally committed.