The detectives investigate a multiple homicide at a fast food restaurant; an addict gives his baby daughter to a drug dealer as collateral on an overdue loan; Internal Affairs reopens the Kirkendall case.
But 9-1-1 could get another spinoff on ABC in a new location, with Las Vegas among potential cities rumored to follow Los Angeles (9-1-1) and Austin (9-1-1: Lone Star).
