When Greg loses a shoe, Wirt must find a way to replace it, and fast if they want to avoid a repeat of the summer camp splinter incident. Luckily, it's not long before they stumble upon Hollow Town, a hamlet populated entirely by wooden doll people, where Wirt finds work as a babysitter for the enigmatic Mrs. Clemence. However, the longer they stay in Hollow Town, the more it becomes clear that Hollow Town holds a sinister secret...