Bookworm follows 11-year-old Mildred (Nell Fisher) whose life takes a wild turn when her estranged father, Strawn Wise (Elijah Wood), a washed-up Las Vegas illusionist, suddenly reappears. Years ago, after a magical encounter with the once-charming Strawn, Mildred's mom moved back to New Zealand. Now, a comical mishap leaves Strawn caring for Mildred while her mom is hospitalized. Their first adventure? Camping to hunt for the mythological Canterbury Panther. As this mismatched duo navigates the wilderness, magic tricks, and an extraordinary quest, hilarity ensues, and they might just find a way to piece their family back together.