Conversation so far:
who are some of the characters?
Ed is imprisoned when he finds hospital janitor Chet Doodley's severed hand.
what is the setting of the story?
CANNOTANSWER.
what are aspects of the story that contain Reagan?
the head of his penis replaced with the head of a miniature Ronald Reagan from Dimension X.

Question: what are some other notable elements in the summary?
Self-contained rewrite: Besides characters, setting and story that contain Reagan, what are some other notable elements in the summary of?