1) Kimberly and Samantha are twin witches who consume children to gain their life essence and powers. 2) Samantha has recently invented a potion that allows them to consume children's souls with just a touch, without killing the children's bodies. 3) The potion contains ingredients for a ritual, vampire blood obtained by experimenting on their acquaintance Auguste, and the "special ingredient" of children. 4) The witches drink the potion and go to an orphanage to test its effects.