Arthur Dent has returned home to Earth. Not time travelled but hitchhiked back in his present to the planet he was born on, the planet described in the Hitchhiker's Guide to The Galaxy as "Mostly Harmless" and the planet which was destroyed by the Vogon Constructor Fleet seconds after he escaped with the help of his friend, the Betelgeusian Hitchhikers Guide To The Galaxy Researcher Ford Prefect.
In order to get to Earth, and then more specifically his home in England, Arthur has hitched rides from an Intergalactic Teaser, a lorry driver called Rob McKenna - who is, unbeknownst to himself, a Rain God - and, finally, a Saab driver called Russell whose sister Arthur has inexplicably fallen in love with. Whether or not she returns the sentiment is hard to establish because she is unconscious throughout their first meeting and, as Arthur only caught the name 'Fenny' before being dropped off at his cottage, he may have some trouble re-establishing contact.
Ford meanwhile has been researching drinks prices in a far from harmless bar on a far from harmless planet. Despite encounters with a bird which squawks the name of local contract killers and a disembodied hand with homicidal tendencies, he survives to learn from an update to his copy of the Hitchhiker's Guide that the Earth is suddenly a going concern once again. This gives him a Purpose In Life.
Meanwhile it is giving a headache to Prostetnic Vogon Jeltz , whose Constructor Fleet is recalled to Megabrantis, the administrative hub of the Galaxy, where he must explain how he has apparently broken the most fundamental of Vogon directives and failed to carry out a simple order.
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