Sen finally sees Haku's true nature: a flying white dragon. But it may be too late for Haku as he's chased by a flock of paper birds and dying from a fatal spell that's been put on him. Sen discovers that Haku's stolen a valuable stamp from Yubaba's twin sister and it's she, a powerful sorceress, who's put this spell on him.
To save Haku's life, Sen must journey to Swamp Bottom and return the stamp to Yubaba's sister. Meanwhile, why is the No-Face monster randomly devouring the workers of the bathhouse?