Even though Will lives in a mundane world, he is by no means normal. Will survives his boring life with the aide of his three Worry Dolls who entertain him in his dreams.
When he sleeps, he is able to feel like a kid again and do whatever his heart desires.
It's only when Will's real life starts to crumble do his two worlds clash, as the Worry Dolls come into his universe to change his outlook and existence.
Now, Will must decide if his inner child can survive in reality or if he is doomed to live life to the dullest.