Since the invention of the sock mankind has wondered where they all disappear. That is until Thomas discovers the disappearing sock epidemic. Following his last sock with his sidekick Teddy, they are flung on an adventure through a secret hidden trap door deep under the bed. In a place few children have seen and torn between his own courage and humility, he must pit his wits against the single mindedness of the Sock Herders. But then... "if it don't know you're scared of it, it will be scared of you..." Or so they say.