A little while ago I attended a talk given by the crime writer and creator of Morse, Colin Dexter. And during a fascinating evening he told of how he devised many of his stories. He said that he took an incident from real life but changed just one thing. And from that change, events took a new (and sometimes sinister) turn.
It's a wonderful way to come up with story ideas and if you are ever in need of a plot, do bear this method in mind. It could be an incident you read in a paper or something you actually experienced but just change one thing or detail ... and then wonder what the consequences are.
Good luck and happy plot creating!