Nolan's spirits were slightly dimmed as Bailey's obsession with conceiving a child and the intricate science behind it overshadowed his usual composure. Lopez stumbled upon a startling discovery - her nanny had an unregistered gun concealed in her purse, leading to her immediate dismissal and a frantic search for a replacement. Tamara's departure left Lucy feeling adrift, still grappling with the emotional aftermath.
Bradford, once a fixture at Metro, was now relegated to patrol duty. Grey informed him that London, the department's psychiatrist, would accompany him on his shifts. Smitty, ever the gambler, had taken wagers on the imminent demise of Chenford's relationship. Grey revealed his intention to ride along with Lucy, keen on observing her performance.
Lopez and Harper struck a partnership, intent on finding a suitable nanny. Grey and Chen were summoned to a domestic disturbance, where a distraught woman claimed her ex-boyfriend had faked his death. Lucy suspected Grey of orchestrating the scenario to test her mettle. Nolan and Juarez responded to a call about a baby left unattended by its nanny, Emma.
The three teams converged on Emma, the missing nanny, piecing together her close relationship with Olivia, a young woman who was also missing. Lucy and Grey stumbled upon a pregnancy test in Olivia's bathroom and bloodstains in the living room. They deduced that Olivia, Emma's friend, had been involved in an affair with the father of the child Emma was babysitting. The revelation shattered the father's wife, who struggled to process the news.
Amidst the chaos, an urgent call led Nolan and Juarez to Emma's location, but they arrived to find her lifeless body. Meanwhile, Lucy found a moment of vulnerability, confiding in Grey about Tamara's departure, the complexities of her relationship with Tim, and her bewilderment over his seemingly effortless abandonment.
On the open radio waves, chatter about nannying dominates the conversation. Blair relentlessly confronts Bradford, exposing his stonewalling tactics and delving into his psyche, leaving him squirming in discomfort. However, he redirects his frustration towards Thorsen. Bailey's urgent call fills the airwaves as she declares over the speakerphone that Nolan and she must indulge in an intimate moment immediately. Celina educates Nolan on the urgency of geriatric pregnancies, emphasizing the fleetingness of time.
Harper and Lopez, amidst their duties, conduct an interview with a seemingly perfect nanny candidate in the confines of their car, only to find themselves bickering over her. Juarez remains in search of a shelter, and Nolan attempts to persuade her to settle with Lucy. They receive a crucial lead and locate Olivia, who reveals that Emma is no longer alive, yet Matthew, her husband, remains untraceable. Olivia confesses that she tried to sever ties with him, but he refused, abducting her in the process.
Nolan and Celina discover Matthew's lifeless body in his car. He's in rigor mortis, indicating a lengthy period of death, and the cause isn't the gunshot wound but rather blunt force trauma. They swiftly deduce that Olivia is a suspect and had lied. Nolan radios Bailey with a warning, but Olivia, sensing danger, flees into the neighborhood, only to be tracked down by Nolan and Celina. She breaks down in tears, confessing everything, leading to her arrest. Lopez proposes a shared nanny arrangement, which the nanny gracefully agrees to.
