Faith and Bosco hunt down the dealer who distributed a batch of lethal heroin; depressed over Bobby's death, Kim attempts suicide.

Even though his co-workers want to nominate him for the ""Paramedic of the Year"" award, a pensive Doc is disheartened as he considers his unfulfilled life. He later teams with Kim as they try to save a heart attack victim while fending off a woman who's wielding a meat cleaver. In addition, Doc tries to minister to a chronic old drunk and a teenaged girl who attempts suicide in her bathtub. Meanwhile, Faith secretly undergoes a procedure to determine if the lump in her breast is cancerous, leaving an unsuspecting Bosco assigned to a nervous rookie cop; Kim reluctantly consults a lawyer about Jimmy's intention to claim custody of Joey.

Bosco's emotional turmoil escalates when he begins to experience panic attacks and flashbacks, but continues to deny that there's anything wrong. After he has a panic attack while driving the patrol car and nearly causes a crash, Sully insists that Bosco see his friend Brian O'Malley, who's a therapist and a former cop.

Yokas and Bosco try to find a missing boy whose parents think has been taken by a registered sex offender; Sully prepares to be questioned about his wife's background

When Sasha discusses taking the sergeant's exam with Maritza, Maritza reveals that she received her promotion meritoriously, not from passing the test; the police are on high alert after two women are assaulted and robbed by men posing as police officers; Kim and Jimmy decide to keep their blossoming romance quiet until Kim is pulled over by the impostors and narrowly escapes with her life with the help of Bosco, Maritza, Sully and Sasha.