Devon receives news that her father has been diagnosed with early-onset dementia, which prompts her to reach out to her younger sister Simone. Simone, however, ignores Devon's texts and only sends a fruit basket in response. Devon, who has recently been in jail for reasons initially undisclosed, decides to visit Simone on a secluded coastal island where Simone works as a live-in assistant to Michaela "Kiki" Kell, a wealthy and charismatic socialite.

Upon arrival, Devon observes Simone's new lifestyle, which is lavish and controlled by Michaela. Simone is dressed in bright, carefully chosen colors and appears to be thriving in this luxurious environment, but Devon senses that Simone has changed significantly from the sister she once knew. Simone is busy preparing for Michaela's annual summer gala, an event designed to raise funds for Michaela's bird sanctuary. Simone's role involves managing the event and catering to Michaela's demands, which seem increasingly controlling.

As the weekend progresses, Devon becomes suspicious of the nature of Simone's relationship with Michaela. She notices subtle power dynamics and psychological manipulation at play, with Michaela exerting a strong influence over Simone's behavior and decisions. Devon confronts Simone about her situation, but Simone is defensive and tries to maintain the facade of a perfect life, refusing to acknowledge the toxicity of her circumstances.

Tensions rise as the gala approaches. Simone struggles internally with her loyalty to Michaela and her desire for independence. Michaela's charm masks a more sinister control, and she pressures Simone to conform to her expectations, including how she should present herself and interact with others at the event. Devon attempts to intervene, urging Simone to break free, but Simone is conflicted and fearful of the consequences.

During the gala, the strained relationships come to a head. Michaela's manipulations become more overt, and Simone's discomfort grows. Devon confronts Michaela publicly, accusing her of exploiting Simone. Michaela responds with a mix of charm and veiled threats, escalating the confrontation. Simone, caught between the two women, experiences a breakdown, revealing the emotional toll the situation has taken on her.

In the aftermath of the gala, the three women face the consequences of their actions and decisions. Simone begins to reclaim her identity, distancing herself from Michaela's influence. Devon supports her sister, and they start to rebuild their relationship, acknowledging the pain and deception that had driven them apart. Michaela, exposed and isolated, loses her grip on Simone and the social circle she controlled.

The series ends with Simone and Devon finding a tentative peace, having confronted the lies and power struggles that defined their weekend. Each woman is left to reckon with the changes they have undergone, with some hope for healing and authenticity beyond the façade of wealth and control.

The TV show Sirens (2025) ends with Simone becoming the new Mrs. Kell, securing a life of luxury at the beach estate, while her sister Devon chooses to return to Buffalo to care for their ailing father. Simone stands at the edge of a cliff overlooking the ocean, symbolizing her new position and power, as Devon departs, accepting that Simone's path is no longer with her.

The ending unfolds scene by scene as follows:

The climax begins after Ethan, Simone's ex, drunkenly falls off a cliff during an argument with Simone about their breakup. Ethan survives but suffers two broken legs. Meanwhile, Michaela, Simone's boss and the wife of billionaire Peter Kell, confronts Simone after a Vanity Fair photographer shows Michaela a photo of Simone kissing Peter. Despite Simone's explanation that she stopped the kiss immediately and ran away, Michaela sees Simone as a threat to her marriage. She abruptly fires Simone, rescinds her offer to make Simone chair of her foundation, and has Simone escorted off the Kell estate. Michaela also orders the staff, who dislike Simone, to box up all Simone's luxury belongings for donation to Goodwill.

Panicked about losing her place in the luxurious world she's grown accustomed to, Simone flees to the beach, where she meets Peter. Peter, angry at Michaela for firing Simone, reveals that Michaela has locked the photo of Simone and him kissing in a safe as leverage against him in case of divorce. Peter then enlists Jose to break into the safe and destroy the photo.

Despite the chaos, Simone ultimately secures her position by becoming Peter Kell's new partner, effectively replacing Michaela. The final scene shows Simone standing at the edge of the cliff on the sprawling estate, looking out over the ocean with a focused, determined gaze. This image evokes a sense of power and control, reminiscent of a ruler surveying her kingdom.

Meanwhile, Devon, Simone's older sister, who had come to the estate intending to bring Simone back to Buffalo to care for their dementia-stricken father, realizes that Simone is not meant to return to that life. Devon accepts Simone's choice to remain in the world of wealth and power. She says goodbye to Simone and returns home by ferry to New York, choosing to fulfill her responsibility as the eldest daughter by caring for their father rather than pursuing a more carefree life.

Thus, the fates of the main characters at the end are:

• Simone: Becomes the new Mrs. Kell, embracing a life of luxury and power at the beach estate.
• Devon: Returns to Buffalo to care for their father, accepting her role as caretaker and relinquishing her hopes of rescuing Simone.
• Michaela: Loses her position and influence as Simone replaces her as Peter's partner.
• Peter Kell: Aligns with Simone, breaking from Michaela, and takes active steps to protect their relationship by destroying compromising evidence.
• Ethan: Survives his fall but is physically injured with two broken legs.

The ending leaves Simone in a dominant position, symbolized by her stance on the cliff, while Devon returns to a more grounded, familial role. The show closes on an ambiguous note about the nature of power, loyalty, and the choices the characters make, without explicit supernatural elements but with a strong metaphorical framing of the women as "sirens"--figures of allure and danger.

Yes, in the 2025 TV show Sirens, there is one notable character death mentioned: the mother of the two main characters, Devon and Simone DeWitt. She died by suicide when Devon was 12 and Simone was 7 years old. This traumatic event is a significant part of the sisters' backstory and influences their behavior and choices throughout the series.

Regarding deaths occurring during the timeline of the show itself, no main characters die. However, there is a dramatic incident where Simone's ex, Ethan, falls off a cliff while drunk and arguing with Simone after she rejects his marriage proposal. Ethan survives but suffers serious injuries including two broken legs, a broken arm, broken ribs, and a concussion.

No other character deaths are described in the series' events. The show focuses more on interpersonal drama, betrayals, and psychological tension rather than character fatalities.

The TV show Sirens (2025) does not have a post-credit scene. The final moments of the series focus on Simone becoming the new Mrs. Kell and standing on the estate cliff, with no additional scenes after the credits. The last scenes show Simone and Devon saying goodbye, with Devon heading back to Buffalo to care for their father and Simone starting a new relationship with Peter, Michaela's ex-husband. The series ends with a conversation between Devon and Michaela on a ferry, and Simone watching the sunset on the property, but no post-credit content is mentioned in any sources.

The series explores themes of women, power, class, and identity. It delves into how the characters transform into inauthentic versions of themselves under pressure, the allure and dangers of wealth and control, and the complexities of sisterhood and loyalty.

Simone has an unsettling and cult-like relationship with her employer Michaela Kell, a controlling billionaire socialite. Michaela's luxurious and cultish lifestyle is addictive to Simone, who becomes increasingly entangled in it, causing alarm to her sister Devon.

Devon is troubled by Simone's involvement with Michaela and tries to intervene, but Simone is drawn deeper into Michaela's world. Their relationship becomes strained, especially after Simone makes her relationship with Peter public and seems to replace Michaela as the new Mrs. Kell, leaving Devon to face her challenges alone.

Peter is Michaela's husband who feels uninspired and resents their childlessness. He begins a relationship with Simone, proposes to her, and plans to divorce Michaela. His actions significantly impact the power dynamics among the characters, especially between Michaela, Simone, and Devon.

Over one explosive weekend, each of the three main women--Devon, Simone, and Michaela--are tested and forced to confront their lies and desires. Simone becomes the new Mrs. Kell, Michaela loses her control and status, and Devon struggles with her family and personal challenges, highlighting their shifting identities and survival strategies.

The 2025 TV series Sirens is not family friendly and contains several potentially objectionable or upsetting elements for children or sensitive viewers. These include:

• Graphic sex scenes and partial nudity
• Foul language
• Substance abuse, including alcoholism
• Depictions of infidelity
• An attempted murder/suicide involving a mother and her young daughter
• Emotional abuse and coercion themes
• Neurotic and disturbing behavior among characters
• Dark and unsettling themes around power, control, and toxic relationships

The series is a dark comedy thriller with intense psychological and social themes, making it unsuitable for children or those sensitive to mature and distressing content.