The basic summary of the story is this:
Tom Benecke is staying home while his wife goes to the movies. He has an important project he wants to get finished. He puts an important piece of paper on the table and it blows out the window and gets stuck on a ledge 11 stories above the street.
Tom feels that he must get the paper so he goes out on the ledge. He gets the paper, but starts to panic and almost falls. When he gets back to his window, it has shut and he must break it to get back in.
Once he gets back in, the paper flies out the window again. This time, Tom only laughs.
The point of the story is that Tom was too obsessed with his work. But his brush with death gave him a better perspective on life and he will not be so obsessed from here on.