Maria Brennan, India Eisley, is a timid 17-year-old high schooler who endures daily bullying from her classmate, Mark, John C. MacDonald. Her only true ally at school is Lily, Penelope Mitchell, while Lily’s boyfriend Sean, Harrison Gilbertson, stands as Maria’s quiet crush. At home, the tension grows: her father Dan, Jason Isaacs, is a successful but controlling plastic surgeon with exacting standards, and her mother Amy, Mira Sorvino, wrestles with depression and haunting nightmares, leaving Maria feeling isolated and unseen.
A strange discovery sets the story’s eerie orbit in motion: Maria finds a sonogram showing twins, and soon after, in a private moment, her reflection moves independently in the bathroom. The figure speaking back to her identifies herself as Airam, a bold, charismatic presence who promises to take away Maria’s sadness. This split becomes more than a trick of the mind, and the two voices begin to blur the line between self and mirror image.
Dan’s “birthday gift” turns out to be cosmetic surgery to fix perceived flaws, an act that crushes Maria’s already fragile sense of self. Desperate for guidance, she confides in Airam, while Amy senses something is wrong but remains dismissed by Dan, whose professional pride and demand for perfection eclipse the family’s vulnerabilities. The tension between appearance and reality deepens as Maria’s world begins to tilt on its axis.
Lily takes Maria to a skating lesson for the upcoming prom, but the afternoon ends in humiliation when Maria slips and cannot get back up. Lily’s cold taunt afterward compounds the hurt, and at the prom, Mark’s cruelty crescendos into a violent assault. Devastated, Maria seeks Airam in the bathroom, and the two figures touch palms and lips, a symbolic crossing where boundaries blur and a troubling fusion begins.
Back at school, Airam emerges with newfound confidence and a blunt honesty that Maria has never possessed. Airam publicly reveals Mark’s cruelty, turning the bully’s humiliation back on him. Airam also orchestrates confrontations that force Amy to reckon with Dan’s infidelity and the hollow nature of their marriage. Maria, trapped within the mirror’s frame, watches Airam push their world toward a reckoning that Maria hadn’t invited but cannot escape.
Airam’s actions grow increasingly violent. She lures Mark to the shower, where a brutal assault leaves him incapacitated. After a difficult period of private practice—skating lessons that become a sanctuary—Airam returns to Lily, who feels both drawn to and intimidated by Airam’s ferocity. When Airam pursues Lily across the ice, tragedy follows: Lily slips and falls, dying from a fatal crash against the pavement. That night, Maria pleads to switch places, but Airam insists, “You wanted Lily out of our lives.” Maria’s question, “Who are you?” is answered with a cold, evasive reply: “You know me.”
The relationship with Sean intensifies, and Airam and Sean begin a fiercely autonomous bond. They slip into a motel where a police summons interrupts their secrecy. Airam resists the call to cooperate, and in a moment of fear and impulse, she strikes Sean with a vodka bottle, killing him. The couple’s grief bleeds into the bathroom as Maria and Airam cry together, a shared space of sorrow that marks a turning point in their inseparable fates.
As the truth about Maria’s past surfaces, it’s revealed that she once had a twin sister who was murdered shortly after birth by Dan, a decision driven by a belief in deformity and the weight of appearances, despite Amy’s pleas. Airam confronts Dan at his clinic after hours, acting out of a wounded longing for acceptance. She strips and questions his capacity to love if she were deformed, and when he answers “Yes,” she slashes his throat with a scalpel. In the silent aftermath, she laments with Maria, asking, “Why couldn’t you love me?”
With Dan dead and the household reeling, Airam no longer sees Maria in the mirror. Crushed by loneliness, Airam crawls into bed beside Amy. A flurry of mirrored bursts follows, depicting Maria and Airam lying on either side of Amy, suggesting a merging of identities into one being, a final, haunting paradox of unity born from fracture.
> You know me.