New-girl and secret-witch Iris just wants to get through her first day of school without a panic attack. The last thing she expects is to be taken in by a coven of three witches—soft-spoken Greta, thoughtful and musical Ridley, and fiery and spirited Binx. They may be the first witches Iris has met IRL, but their coven is not alone in their small northwestern town.

The Triad is the other coven at their school. When the Triad's not using spells to punish their exes or break up happy couples for fun, they practice dark magic. The two covens have a rivalry stretching all the way back to junior high.

When tragedy strikes and one of their own is murdered, the rival covens must band together to find out who is responsible before it's too late. Someone's anti-witch ideology has turned deadly...and one of them is next.