Elizabeth is an only child, new to town, and that can be very lonely. So when she meets Jennifer, a girl from her school - who claims to be a witch no less - she is eager to become her apprentice. Over the course of the next several months, the girls meet on Saturdays for their weekly rituals and read volumes on witchcraft in hopes of developing a flying ointment. But they do not find the best magic in Jennifer's black cauldron.