Dawn Summers is a member of the Scooby Gang who was originally a mystical power known as The Key. In 2000, Czech monks of the Order of Dagon have possession of The Key, a mystical ball of living energy that can open a portal to all dimensions. Once opened, the portal would create chaos on Earth as hell dimensions flood into this world until the energy is used up and the portal is closed again. The monks want to put this dangerous power to good use, but forces of darkness track them down. In an act of desperation, three surviving monks use powerful magic and part of Buffy to forge The Key into human form as a fourteen-year-old girl, and send it to the Slayer as a sister to protect from Glory, a hell-god bent on returning to the hell dimension from which she had been exiled for being too vicious.