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.