In the sleepy suburban town of Rushford Village, an eerie calm is shattered when twin brothers Ethan and Aaron inexplicably vanish without a trace. Their distraught parents, John and Mary, are consumed by panic as they frantically search every nook and cranny, desperately hoping to uncover any clue as to their sons' whereabouts. After 24 agonizing hours of frantic searching and escalating dread, the unthinkable happens—the boys are returned to their doorstep, seemingly unharmed yet unsettlingly changed.

Though relieved to have their children back, John and Mary quickly realize something is amiss. Ethan and Aaron now sport eerie smiles that never quite reach their haunted eyes, and a dark, lingering shadow seems to have seeped into their very beings. As the days crawl by, Ethan's behavior grows increasingly peculiar. He takes to whispering furtively at odd hours, pacing the house as if searching for something inexplicably lost to him. Aaron, on the other hand, remains stoically silent yet demonstrates an uncanny ability to predict strange occurrences sweeping through the town—sudden blackouts that send simmering tensions among neighbors boiling over into chaos.

When pressed about their missing hours, the twins claim to have no recollection of what transpired. Deeply unnerved yet clinging to hope, Mary immerses herself in researching local folklore, only to unearth horrifying legends about "the drift"—an insidious phenomenon where malevolent forces replace the souls of separated twins with sinister entities. As dread coils tighter around the family, Mary's desperation grows in lockstep with the encroaching darkness.

Menacing figures begin stalking them through the night, believed to be the unseen watchers that feast upon fears and secrets gleaned from fractured memories. Mary realizes she must race against time to unravel the truth of what befell her sons before this malignant force can consume them completely once more. However, the path to salvation lies not only in confronting the terrors lurking outside but also those lurking within her own flesh and blood.

As the shadows between reality and nightmare blur, Mary finds herself entangled in a harrowing battle to save her children's very souls. With every disturbing revelation, every grim hint about her sons' transformation, she inches perilously closer to a shattering truth—one that will test the inviolable bonds of twin souls and family itself. In the end, will she muster the strength and resilience to guide Ethan and Aaron back into the light? Or will she be forced to accept a grim reality where they are lost to the darkness forever, condemned to have their twinned hearts severed by the insatiable hunger of primordial evil?