Neil Clarke, a schoolteacher who harbours a crush on his neighbour, TV station employee Catherine West (Beckinsale). A supreme council of aliens, having come across the Voyager probe satellite, decide to conduct a test to see if Earth is worthy of being spared from total annihilation. One of the planet’s residents is chosen at random to be bestowed with the ability to make absolutely anything they wish happen. Neil just so happens to be that lucky person. As he comes to terms with his newfound abilities, he gives his pet dog Dennis a human voice (Williams) and has to fend off Catherine’s aggressive suitor, the American Colonel Grant (Riggle). Neil soon finds out, as he must, that possessing all the power in the world isn’t all it’s cracked up to be.