The story takes place in a world where most machines have stopped working and where virtually all animal species have disappeared. One group, composed of two sister witches for powerful spells and a young boy who calls himself "Prince," began a long journey to destroy the "magic stones" giving their possessors immense powers but in counterpart, corrupt their souls. They range from adventures adventures, being invited to assist people they encounter: an old man whose daughter was kidnapped and who has the magic stone which has bribed her father, a village where all the men were transformed into toads by a jealous witch of their love ...