Picking up where Mostly Harmless left off, Arthur Dent, Ford Prefect, Trillian and Arthur's daughter Random are snatched out of the Vogons' latest demolition of Earth and dropped into a fresh set of problems — among them Zaphod Beeblebrox, the immortal and permanently furious Wowbagger, and a Vogon captain's son who is inconveniently developing a conscience.
Much of the story settles on Nano, a planet colonised by wealthy refugees from Earth whose founder, Hillman Hunter, is shopping for a god to keep the place in order. The applicant he lands is Thor, which turns out to be exactly as manageable as it sounds, and the Vogon fleet is still coming.
Written by Eoin Colfer at the invitation of Douglas Adams's estate and published in 2009, And Another Thing... is the sixth book in the Hitchhiker's Guide "trilogy" — a deliberately warmer send-off than the bleak note Adams left the series on.