An imaginary world comes to life in a holiday tale of an eccentric toymaker, his adventurous granddaughter, and a magical invention that has the power to change their lives forever.

When 12-year-old Rob Horton discovers a caged tiger in the woods near his home, his imagination runs wild and life begins to change in the most unexpected ways. With the help of a wise and mysterious maid, Willie May and the stubborn new girl in school, he must navigate through childhood memories, heartache, and wondrous adventures.

Four best friends, on the brink of starting middle school, realize their lives are about to change forever. So on the last weekend of summer, they set out to make the most of it. Nothing could prepare them, though, for the startling discovery they make while revisiting one of their favorite haunts.