By chance, two men - one English, the other French - meet in a provincial railway station. Their resemblance is uncanny, and they spend the evening talking and drinking. It is not until John wakes the next morning that he realises his French companion has stolen his identity and disappeared. So John steps into the Frenchman's shoes, and faces a variety of perplexing roles - as owner of a chateau, director of a failing business, head of a fractious family, and master of nothing.