From IMDB:
Four denizens in the world of high-finance predict the credit and housing bubble collapse of the mid-2000s, and decide to take on the big banks for their greed and lack of foresight.
Although this scary (because it is a true story) film tries to explain the financial concepts involved, it may help to read the Wikipedia summary which contains a link to Credit Default Swaps (CDS).
Plot moves quickly, acting is good, and the lineup of stars is promising.
If you or your financial adviser rely on the rating agencies (who knowingly lied about the worthiness of the mortgage backed instruments), how safe do you feel?
Not only is there not a happy ending, but the same corrupt practices are continuing even as you read this review.
Due to the fact that the banks are continuing their dishonest mortgage schemes, there will be a sequel to this film starring Will Ferrell as Donald Trump.