The protagonist is an eleven-year-old boy who lives in a small house with his parents. One day, the Grand Witch Subu appears and takes the protagonist away to make him her disciple. Despite his attempts to escape, he ends up at Subu's house, where he meets the witch's family.

After much thought, the protagonist decides to stay in that house, however, everything changes when a mysterious white silhouette appears in his path, making him begin to question his whole life.

What decisions will the protagonist make? Will he find the truth behind the strange silhouette? What secrets are Subu and her family hiding?