Traveling with his three followers to the West to seek Buddhist scriptures, Hsuan-tsang encounters the White-Bone Demon, who keeps changing herself into different human forms in order to catch and eat him. When Hsuan-tsang"s follower, Monkey, sees through her disguises and tries to kill her, the deluded Hsuan-tsang orders him away, only to fall into the demon"s clutches. At the last moment Monkey returns to rescue him.