Three years after losing her husband and daughter in a car accident, Camille begins hearing the bell toll, though initially only she can detect it. With the help of Father Lemoine, a retired priest, and Yann Durand, a historian with ancestral connections to the bell, Camille learns that the artifact once served as both warning system and conduit for "soul storms" - spiritual contagions that caused mass madness during medieval plagues. As the bell's influence grows stronger, its seal crumbles, unleashing a supernatural storm that spreads rapidly through the region, possessing vulnerable minds. Camille discovers she's the primary conduit due to her unresolved grief. The possessed villagers, including Father Lemoine, pursue them as Camille and Yann flee to the university to seek answers in his ancestor's journal. Amid escalating chaos, they witness reality itself beginning to break down as the barrier between worlds collapses, threatening to unleash an ancient hunger that feeds on human suffering.