Inside of his book, adventurous Harold can make anything come to life simply by drawing it. After he grows up and draws himself off the book's pages and into the physical world, Harold finds he has a lot to learn about real life.
Rising executive Tim Conrad works for a boss who hosts a monthly dinner in which the guest who brings the biggest buffoon gets a career-boost. Tim plans on not attending until he meets Barry, a man who builds dioramas using stuffed mice. Barry's blundering but good intentions send Tim's life into a downward spiral, threatening a major business deal and possibly scuttling Tim's engagement to his fiancee.
When his lawyer wife, Sofia, becomes pregnant, chronic underachiever Tom Reilly must take a job at his father-in-law's advertising firm. Tom has to adjust to the demands of a very high-powered job, and he finds himself in an increasingly hostile office rivalry with Chip, Sofia's paraplegic former lover.