This series unfolds the tale of five childhood friends – Lin Zhihua, Xu Weibiao, Wang Lei, Zhang Peng, etc. – whose distinct choices lead them down separate paths during a transformative era. Against the backdrop of societal upheaval, Lin Zhihua, driven by a sense of justice, fulfills his dream of becoming a police officer, only to find himself at odds with his once-close friend who has strayed down a misguided path.