How do these stages of the hero’s journey apply to percy jackson?

Percy begins his journey much like any hero: unaware. Currently his normal world seems full of bad things including his ADHD and dyslexia. His mother is the only normal and consistent thing in his life that he values. All he wants is to do good by her, but he keeps coming up short. This is the "Ordinary World" in the Hero's Journey.

Explanation:

A prepositional phrase has a preposition and its object. It is a group of words contains the preposition, the words modifying it and the object.

Example: He arrived in time.

(In time is the prepositional phrase) Does that help?