Every weekend Chen Si does his rounds on the Yangtze River Bridge in Nanjing to prevent suicidal people from jumping to their deaths. In the last 10 years, he has saved over 200 desperate people, most of whom come as migrant workers from the province in search of a better life. They speak frankly about their problems. They are ashamed of not having lived up to the family's expectations and the goals they set themselves. As much as we get to know about the rescued and their living conditions in the course of the film, the densely edited film circles closer and closer to the main hero Chen Si. His blood is poisoned with lead by the exhaust fumes and he tries to drive away the shadows of his soul more and more often with alcohol. At the end of the film and a long night of karaoke the deep premonition breaks out of him to certainty: I'm neither a hero nor a do-gooder, but he still can't let go of his good deeds. Who saves him?