Ban Ga-i scrapes by as an unlicensed, self-taught exorcist, driving out supernatural creatures however she can. Then one day, a Sildobkkaebi — a thread goblin — appears out of nowhere with a request: “I’m looking for someone who can find my younger sibling, the Forest Guardian.” She accepts the commission in exchange for having a wish granted. But as she works to track down the Forest Guardian, the events that unfold begin to eerily overlap with fragments of her own childhood. Meanwhile, the Forest Guardian’s absence has left the gates of the underworld loose, and through that gap, malevolent spirits are multiplying across the living world…
