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 superiorssuggest 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 DevonLane| 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 ashootout| 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 identityto 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 andtaking Welles hostage...