When an explosion goes off at the passenger check-in desk at London's Heathrow Airport, the unexplainable event is deemed an act of God. For private investigator Dirk Gently, it's his job to find out which god would do such a strange thing. In the meantime, one of his clients is murdered and his battle with the cleaning lady over his unbelievably filthy refrigerator comes to a standoff. Is it all connected? Or is this just another stretch of coincidences...

Quirky and bumbling private investigator Dirk Gently stumbles upon a ghost, millions of years old, wandering the earth and disturbing its people. Dirk soon discovers this phantom yearns for more than a good haunting: it is desperately trying to go back in time to prevent its own death. But this ghost was no ordinary person, and helping it save itself just might change the modern world as we know it. And not in a good way!