Hell takes a number of forms: there is the usual Ford Prefect form of hell, fresh hell in the form of an all-new version of The Hitchhiker's Guide to the Galaxy, and a totally unexpected hell in the form of a teenage girl who startles Arthur Dent by being his daughter when he didn't even know he had one.
Can Arthur save the Earth from total multidimensional obliteration? Can he save the Guide from a hostile alien takeover? Can he save his daughter, Random, from herself?
Of course not. He never works out what is going on, exactly. Will you?