It doesn't take much for Henry, an introverted young hedgehog, to roll up into a tight ball of anxiety. And now he's on a nerve-wracking playdate with a new neighbor, a very energetic chipmunk named Chester. Chester wants to go on all kinds of imagined adventures in the backyard, but Henry much prefers the safety of experiencing adventure in the pages of a book. What's more, he's afraid that if he expresses his own creative ideas Chester will think he's silly and uncool. But with the help of a "magic" stick, a lizard who knows she's actually a dragon, and the encouragement of rambunctious Chester, Henry just might find his bravery and save the playdate!