Following new clues to his missing uncle, Wu Xie reunites with Zhang Qiling and Wang Pangzi for a journey toward Thunder City. Their search for the meaning of the thunder recordings exposes a long-hidden conspiracy and intensifies the dangers around them.
A body discovered in a suitcase draws detective Yan Liang into a case whose apparently straightforward evidence begins to unravel. The investigation retraces prosecutor Jiang Yang's long attempt to expose an earlier injustice protected by powerful interests.
The sudden death of their friend Hu Jingjing forces three women building lives in Beijing to reconsider the pressures they have endured. Grief intersects with demanding jobs, family obligations, and uncertain relationships as they try to support one another.