Det. Mike Donovan is having a rough time. His wife, Chelsea, is leaving him and asking for a divorce. His partner, Jackson, doesn't understand him and his Captain is not sympathizing. Det. Simms is an orphan whose child innocence makes her the best detective around. Together Donovan and Simms will learn to work together and take down a ruthless druglord plaguing their city, all the while learning they aren't just partners, they are family.