Wang Xiufen injured her right leg when improperly stacked goods fell on her at the factory. Because the factory handled the incident carelessly, her wound became infected and began to rot. Her son, Guo Ping, repeatedly sought justice but was turned away. He was also maliciously suppressed and violently driven out by supervisor Zhang Han and vice president Chen Feng. His ex-wife, Tang Xiaoxiao, steps in to help as a lawyer, gathering irrefutable evidence and joining forces with fellow injured workers. In the end, she exposes the Chen Group and brings all the perpetrators to justice, allowing the mother and son to reclaim the justice they deserve.