Christopher Booker’s book The Seven Basic Plots: Why We Tell Stories outlines seven plots. One of these seven is ‘Voyage and Return.’ In this type of plot, the main character enters another land where normal rules don’t apply. This ‘dream world’ is often very different from his own home. The character must overcome threats. He conquers or escapes the world before returning home a more mature person.
In the new land, logic and common sense don’t apply. The hero must ask for advice from allies. Unfortunately, these are often tricksters that lead the character into deeper trouble.