It is bad to be a monster.
Cliff has been reading a lot of horror books and feels inspired by the evil characters he reads about.
Cliff wants to feel like the characters he reads about.
Cliff gets prop weapons and costumes to use as an employee at a Halloween attraction.
Cliff obtains tools and attempts to go on a murder spree.
Cliff loves being able to pretend to be  monster while being a good person at heart.
Cliff murders someone and feels like his heroes, but is apprehended and is sent to prison.