In the fog-shrouded town of Astoria, Oregon, behavioral analyst Lena Moreau's carefully ordered life begins to unravel with the insidious arrival of a memory that isn’t hers. A fleeting glimpse of a woman with her face, whispers of shared experiences she can't recall, and her partner's intimate recollections of a past she doesn't recognize shatter Lena's solitary existence. The familiar comfort of her childhood home transforms into a place of unsettling echoes, her parents' strained smiles hinting at a terrifying truth: Lena is the one whose memory is fractured.
Driven by a primal need to reclaim her past, Lena embarks on a meticulous investigation, unearthing coded messages hidden within childhood photographs and the very architecture of her home. A chance encounter with a childhood friend reveals the existence of a spectral “sister,” a haunting echo of Lena herself. The investigation takes a dark turn when Lena uncovers her parents’ involvement in a defunct experimental therapy program, revealing a chilling truth: she wasn't just a participant; she was the subject.
The fragmented pieces coalesce into a terrifying realization: the “twin” is a dissociated fragment of Lena’s own psyche, born from a deeply repressed trauma, amplified by the experimental therapy, and systematically erasing Lena’s existence. The stakes escalate; Lena isn't just fighting to reclaim her memories, she's fighting for her sanity, her identity, against a part of herself she never knew existed. Her partner, caught in the crossfire, becomes a pawn in this psychological war, his love a weapon used against her. Even her parents, driven by guilt, are now complicit in this erasure.
Trapped in a psychological labyrinth, Lena must confront the echo wife, delve into the repressed trauma that birthed it, and reclaim the stolen pieces of her identity. In a climactic battle within the fractured landscape of her own memories, Lena uses the very codes she discovered to trigger a cascade of true memories, pushing back against the encroaching darkness.
The fog begins to lift in Astoria, but the victory comes at a cost. Lena emerges with her identity reclaimed, but scarred. Her relationships, forever altered, remain fragile. She has stared into the abyss of her own fractured mind and emerged, not unscathed, but whole, a shadowy reminder of the fragility of memory and the enduring power of the human psyche to both fracture and heal.