Try the book:
http://www.amazon.co.uk/Cloud-Atlas-David-Mitchell/dp/0340822783
The book is a series of snippets of lives across hundreds of years, all slightly related. The book has 6 stories, 5 of which are broken into two and surround the others like this: 1 2 3 4 55 4 3 2 1 - so you get the part 1s and part 2s together (while the next chapter, or skip forward in time gives you some indication of the previous chapter's outcome).
There is a slim suggestion that some of these people are "spiritually" the same... if you want to read that into it... It's really about how stories get passed on.
My understanding is they failed when making the film by making the "spiritual continuation" quite obviously the only reading available... meaning when there are inevitable disjointed moments, it seems confused rather than playing with form...
So, what happened?: Too much money thrown at an un-filmable book.