High school best friends Mazzy and Nora enjoy practicing witchcraft, just a few simple spells here and there. When the full moon casts its light on the Cape Cod beach during one of their spells, a body washes ashore. Soon after, strange things begin to happen including hearing the dead woman’s voice guiding them to help solve her murder. As they follow the clues, they begin to realize that they may be the next to go.