When seventeen-year-old Noa Ashwood returns to the eerie town of Thornwick Hollow, she hopes to bury the ghosts of her past. But the fog-choked streets remember her name—and the blood that ties her to an ancient curse sealed beneath the roots of the Ashwood tree. Reuniting with her childhood friends—skeptical Riven, bold Mavis, dreamy Astra, and empathic Celeste—Noa stumbles into a forgotten church where a black stone lies waiting. Once disturbed, the stone begins to unravel everything: time, memory, and the thin veil between their world and something hollow beneath. As visions worsen and trust begins to rot, the girls are drawn into a chilling legacy involving secret rituals, cryptic journals, and a creature of fog that watches from the dark. To survive, they must unravel the truth behind a century-old oath—and confront what it means to break it. But in Thornwick Hollow, nothing stays buried forever.