Minase, a high school student, found a book of magic in an isolated room in his school. He started practicing black magic that has extreme sexual effects that benefited him and some of his friends. Intrigued, Minase got deeper and deeper into using the craft, not realizing the evils that will come forth. Eventually, the origins of the book was revealed, and so did the incident twelve years ago on the night of the Walpurgis, the night when the power of evil is at its strongest. After coming to his senses, Minase struggles to get himself out of the darkness that he had put himself into.

In addition to the original OVA, there are 2 sequels and prequels:

Bible Black Origins, set twelves earlier, deals with the original Magic Club that first found the magic book and later hid it in the school basement where Minase found it. The two teachers who appear in the original OVA are students at the same school in this one.

Bible Black New Testament was released in 2004 and is set several years after the original OVA. The surviving characters have gone on to new careers but are pulled back into the horror of black magic.