Kelly Quinn stumbles upon her grandmother's cookbook in the attic and discovers some far from ordinary recipes.

In an attempt to save Grandma, the girls make a Brain Boosting Bolognese to help decipher the book's clues; at school, they learn that there is such a thing as being too smart for your own good; the mystery of Grandma's past deepens.

When the girls lose a neighbor's dog, they cast a "Lost and Found-ue" spell that attracts everything that has been lost in the neighborhood over the years; Mama P. attempts to use magic to prepare for a long-awaited trip.

The girls attempt to get Mama P. to disclose the mysteries of the past; Kelly is forced to spend the day with her mom to cover for her excessive honesty; Hannah and Darbie butt heads while searching for a way to break Terri's spell.

In order to convince Jake that magic is real, the girls cook three mystery spells for him to sample; the unexpected downsides jeopardize Hannah's chances of winning a school-wide fund raising contest.