Washington, D.C., Police Chief Jack Mannion, runs a modern-day "Untouchables" team to patrol the most crime-ridden, drug-infested streets in his city.

Mannion's uncle (Ernest Borgnine) witnesses the murder of a jeweler and pushes his nephew to pursue all possible leads.

Following a serious accident, Mannion challenges his counterpart in the Department of Roads and Highways; Temple and Debreno search for missing documents relating to a corporate fraud trial.

A series of murders points to someone opposed to interracial relationships; Ella finds incriminating evidence against a heroic police officer.

Police brutality is suspected when a man in custody dies, resulting in a campaign for Mannion's dismissal.