With dreams of becoming a successful entrepreneur just like his beloved Richard Branson, Lemon bids farewell to his hometown of Leeds and heads for the capital. When he becomes an overnight billionaire, it seems everything is going his way, but it's not long before he discovers that life can be just as cruel as it is kind.
John Smith has been happily involved in a bigamous marriage for five years. He lives with Stephanie in Finsbury and Michelle in Stockwell. Fortunately, for John, he's a taxi driver which involves varying shift work! Simple? Well, when John unwittingly becomes a have-a-go hero and the Finsbury and Stockwell police forces discover something suspicious in their paperwork, John's happy bubble is about to be burst. The action of the movie takes place during the next hectic 24 hours as John, with the assistance of his gullible neighbor Gary, rush between North and South London attempting to thwart the police and prevent the two loving wives coming face to face!