Kelly Quinn and her two BFF's, Darbie and Hannah, stumble upon her grandmother's mysterious cookbook in the attic and discover some far from ordinary recipes. When the Shut'em Up Shortcake silences Kelly's pesky little brother and the Healing Hazelnut Tart heals Darbie's ankle, the girls discover they have the power of magic.

After their Last Ditch Layer Cake breaks all the town's curses and brings an old enemy back, Kelly, Hannah and Darbie are on the hunt for a special ingredient to determine his whereabouts. The ingredient only blooms once a year... on Halloween, so The Girls have to find a way to go back to last year's Halloween and get it without running into their past selves.

In order to protect themselves, the trio cooks a spell to help them remember magic forever. The downside is that they forget their friendship and ever meeting.