The detectives arrive on the scene of a shooting, where the shooter is Det. Walsh, from the 27, who was having a late night out with a few drinks and hooker. Simone arrives on the scene, but his difficulty breathing causes his so much discomfort, he is taken to the hospital. It appears as though Bobby has some heart trouble, its enlarged, cause unknown. Later, back at the squad room, Sipowicz begins questioning alcoholic Det. Walsh. Walsh's lieutenant arrives, ready to crucify him, Fancy steps in and ask him wait until their investigation is over. The investigation concludes and the detective's actions are vindicated, although Andy offers him some advice about his drinking. Bobby's condition may be caused by an infection; however, more tests are needed to know for sure.