The Coastal City Narcotics Squad, led by Captain Qi Weibin, raids a drug manufacturing hideout following a tip-off. Despite capturing the entire operation, the main suspects, the Du brothers, manage to escape. They retaliate by committing a murder, leaving the narcotics team without a crucial lead. During the investigation, multiple police departments collaborate to uncover a thread of evidence, linking several related cases. Key suspects emerge, and the Coastal City Bureau launches a comprehensive cleanup operation, codenamed "Anger". The stage is set for a showdown between justice and evil.