The Seo family is cursed with short lives, but Seungjoo seems to defy fate. That is, until a drunken night with his lifelong neighbor, Kim Muheun, changes everything. Awakening beside Muheun, Seungjoo discovers he can suddenly see ghosts. As the eldest son of a prestigious exorcist family, Muheun vows to protect Seungjoo at all costs, even if it means facing deadly spirits. Bound by a deep connection that feels almost predestined, their intertwined fates lead them on a perilous journey of exorcism, danger, and the fight against an ancient curse.