Episode 4 of "Sirens" kicks off with a nostalgic flashback to Simone's interview with Michaela for the role of an assistant. In this scene, Simone sports a strikingly different appearance, adorned with casual attire and visible tattoos. She reveals how she abandoned her law school journey, acknowledging that it was never truly her passion but merely a pursuit fueled by her mother's prophecy of her becoming a lawyer. A profound connection forms between Michaela and Simone as they share their harrowing past experiences. Michaela, moved by their bond, takes Simone to Barnaby and subsequently offers her the coveted position.
The narrative then leaps forward to the present, where Ethan is in the midst of proposing to Simone. Simone queries the wisdom of involving her father in such an intimate moment, to which Ethan responds that it's a grand gesture signifying his commitment to her. Just as the proposal reaches its climax, Michaela enters the scene, prompting Bruce to suddenly recognize her. He embraces her warmly, mistakenly identifying her as Andrea, Devon's mother. Michaela deftly diverts attention back to the proposal, but Simone, overwhelmed, declares she cannot proceed and flees the scene.
In the kitchen, Peter is engrossed in preparing his clam chowder when he catches wind of the proposal from his staff. Simone, tears streaming down her face, enters, prompting the staff to discreetly exit. Peter, once again, apologizes for their recent kiss, and Simone agrees to keep the incident a closely guarded secret.
Michaela heads to the main house, only to be informed that a Vanity Fair photographer awaits her. She instructs him to wait patiently and instead seeks out Simone for a heartfelt conversation. Michaela opens up about how her life underwent a transformative shift after marriage, highlighting how a divorce from Peter would mean losing the preservation and the aviary she holds dear. She then bestows upon Simone a momentous opportunity: to chair the foundation in New York. Simone, overjoyed by the prospect, expresses her heartfelt gratitude to Michaela.
Meanwhile, amidst the comforting ambiance of Peter's clam chowder dinner, everyone gathered in the house except for Simone and Michaela. A subtle discord arose as Ray and Morgan exchanged heated words over Devon's welfare. Moments later, Michaela descended the stairs, granting Ethan the green light to visit Simone. Peter, seizeing the opportunity, extended invitations to Bruce and Raymond for the upcoming gala. Upon discovering that a renowned baseball player would also be in attendance, Devon readily concurred, solidifying their collective attendance.
In the kitchen, Michaela stumbled upon Peter's personal phone, its screen illuminating with the persistence of a repeatedly dialed number. Curiosity piqued, she dialed the number and was astonished to learn it belonged to Peter's son. Meanwhile, Peter and Bruce retreated indoors.
Upstairs, in a private moment, Simone unveiled a facet of her life to Ethan, revealing that he scarcely knew her true self. She recounted her last encounter with her father in a courtroom, where he lost custody due to neglect and abuse. Ethan, seemingly unable to grasp the reality of their breakup, stood stunned.
Outside, Devon stood in patient vigil alongside Ray and Morgan. Ray, sensing Devon's dedication, shared the extent of his efforts to nurture Simone. As Ethan eventually departed, Simone sought a private audience with Devon. Despite acknowledging Bruce's dire condition, she remained resolute in her refusal to communicate or reconcile with him. She held him accountable for her mother's demise and her own attempted suicide, her voice tinged with bitterness and unresolved pain.
As Devon confronts Simone about discontinuing her medication, Simone unveils that her doctor had gradually phased her off them, announcing her recovery from PTSD. However, she kept this from Devon, fearing it would distress her; Devon takes pride in being Simone's caretaker. Understandably upset, Devon announces she will no longer assist Simone, seeking solitude by sprinting along the beach. Ray, Morgan, and Eddy swiftly pursue her, with Ray attempting to express concern. Yet, Devon briskly dismisses him, urging him to return to his wife and confessing that their intimacy only serves her when she wishes to indulge in self-loathing.
Elsewhere, Peter and Bruce find themselves engrossed in a poignant discussion about mortality and family. Bruce's demeanor abruptly shifts when Peter offers him a cigarette, prompting an anxious quest for Devon. Michaela soothes Bruce, who mistakes her for Andrea, their shared mother. He voices regret for his failures towards her, prompting Michaela to share her own struggles with pregnancy. Bruce eventually exhausts himself into slumber.
Following this, Peter apologizes to Michaela for their inability to conceive, later confessing his attendance at his grandchild's christening. Michaela, already aware, expresses her understanding, and they reconcile. However, Peter inadvertently reveals that Simone was also privy to this information.
In search of Devon, Simone encounters Ethan, who is intoxicated and belligerent, calling her names and staggering perilously close to a cliff. Despite her efforts to restrain him, Ethan loses his footing and tumbles over, his cries echoing across the beach where Devon listens intently.
Panicked, Simone races back to the house to inform Michaela and Peter. They swiftly dial 911. Meanwhile, the photographer who has been awaiting Michaela's attention steps forward, insisting she view a photograph—a heart-wrenching image of Peter kissing Simone.
