Trekking across mountains to a seaside village, Ginko finds his fellow hikers unsettling indeed. The first is a misplaced swamp which can inexplicably travel as if blessed with feet. The second, a melancholy, green-haired beauty whose fate is bound to that of her companion. While she accepts that she will pass into oblivion along with the mushi into its source, guilt from a former deed drives Ginko to seek to turn the tides. Will the final journey of one prove the beginning or the end of the other?