 Mike Dooley has been teamed up with Jerry Lee, a German Shepherd dog, for nearly ten years, but Jerry Lee isn t as young as he once was, and Dooley s superiors suggest that maybe it s time that Jerry Lee was retired from the force. But there is a stalker who wants Dooley dead. The stalker, disgruntled crime novelist Devon Lane, became obsessed with Dooley s wife after she rejected his book, and he blames Dooley for her death. When Jerry Lee can t keep up with chasing Devon during a shootout, Captain Byers teams Dooley and Jerry Lee with a younger K9 team -- aggressive female detective Welles and her dog Zeus, a young, strong Doberman Pincher. After Dooley futilely investigates a convict he once busted, the dogs get him back on track by sniffing out Devon s storage locker. The room reveals Devon s identity to Dooley, and one of Devon s manuscripts reveals that he intends to make Dooley suffer for his words. When Devon makes a bold move by invading the precinct and taking Welles hostage, it s Dooley and Jerry Lee to the rescue. But can Jerry Lee pull off this rescue?