Muldoon and Latucci take their wives on a double date using the perks of the job to have a night on the town. Shea is partnered for the night with O'Bannon, who has some fun at Shea's expense when arresting a couple of hookers. Kane takes the first step in avenging Mr. O's death, in a move that will trigger a war on the west side.

While looking for Smitty's killer, Muldoon and Bullman find themselves in the line of fire. Deirdre and Sean realize they are not on the same page, and Duffy and Barbara have a fun drunken night out. Sgt. Mike invites Patton out to visit him in order to gain some traction with the Mr. O murder investigation. O'Bannon is put to the test when Muldoon includes him in a dangerous pursuit.