In the mountain town of Greywhistle, an eerie fog is more than mere mist—it's alive, prowling the dark streets at dusk and conjuring the deepest sorrows of anyone caught in its embrace. When trauma nurse Elena Reyes arrives seeking solitude, she instead finds herself haunted by her lost loved ones, drawn from memory into the swirling gloom. But she's not alone in her struggle: a wary deputy sees phantom figures stalking deserted roads, a rational doctor fights to explain the unexplainable, and townspeople hear the voices of the dead whispering from the haze.

As rumors of a long-abandoned government project surface, Elena and her allies race against an unearthly force that feeds on guilt and grief—growing stronger with every broken heart. To stop it, they must confront the ghosts of their own pasts, forging a fragile hope that just might dispel the fog's relentless grip. In Greywhistle, there's only one path to peace: stand together and face the darkness—or let it consume them all.