Quick Analysis Request

Can you analyze this excerpt from a synopsis from a grammatical perspective:
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Allegorical, features four characters; two mice, "Sniff" and "Scurry", and two little people, miniature humans in essence, "Hem" and "Haw", live in a maze, a representation of one's environment, and look for cheese, representative of happiness and success.
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First of all, I believe a subject is missing after "allegorical".
Allegorical, the book features....
Secondly, I think 'who' is missing before "live in a maze."

Hi, You might be right about the missing words. However it is a synopsis, so rather like a Newspaper Headline it using 'Telegraphic English' to get across a message with the minimum of words.

[The book,] Allegorical, features four characters; two mice....and two little people...live in a maze...and look for cheese....