Mystery follows Christina, Grant, Crystal, and Mick on their vacation to Disney World, where they need a little luck and loads of creativity to solve their latest case.
Fourteen-year-old Hannah, an orphan indentured to the family of a British general in Boston in 1775, begins attending secret meetings diguised as a boy, then passing messages and warnings to the revolutionaries using her beloved horse, Promise.
A little mouse who is teased for being the smallest and for playing an acorn drum is singled out to give a gift to the very special child who has been born in a nearby stable.
Young Christina and Grant go on a Grand Canyon trip with their mystery-writer grandparents and set out to solve a spooky mystery with Danielle and Marisa, the daughters of a local park ranger.
Nancy Drew and her friends interview their neighbor Terry Smith who takes in stray cats and kittens and finds homes for them. When Cottonball and Coco go missing, it's up to Nancy to find them.