Their gift can change the world, they just don't know it yet... Jenna and Jessica Tipple are identical twins. The tipple family's secret gift is magic - the good kind. Unfortunately, when they enrol at Chumsworth School, they discover that the head mistress, MissSnippings, has an unnatural dislike of twins and an unhealthy interest in witchcraft. When the school play just happens to be about the Salem witch trials, the twins realise they're in acauldron full of trouble...