Vince is stuck in the no-man's-land of the forty somethings - too old to play the field and too young to play bingo.

A self-employed builder from London, Vince has just made the biggest mistake of his life. On a tropical fish fanciers weekend he stayed up all night chatting with a pretty young woman. Absolutely nothing happened, but when his wife Wendy finds out about Vince's adventure, his dull, settled life is set to change dramatically.