From NetFlix:

In the world of this sci-fi thriller set in the not-too-distant future, artificial organs are readily available to anybody with a credit card. But what happens if a buyer falls delinquent on his payments? Jude Law stars as an organ repo man who’s now fleeing his ex-partner after failing to keep up the payments on his own recently installed ticker. Miguel Sapochnik directs; Forest Whitaker and Liev Schreiber co-star.

Do NOT watch this film with your family in front of a cozy fire near the Christmas tree because “Repo Men” is easily one of the more gory and disturbing films I have ever seen. It is based on the novel Repossession Mambo by Eric Garcia. Having warned you, I now encourage those of you with strong stomachs to see this film. Jude Law, newly beefed up, and his partner Forest Whitaker portray chillingly a pair of opportunist thugs whose job is indeed to retrieve transplanted body organs from clients who have fallen behind on their outrageously expensive loans at more than 19% interest. You must be able to watch Jude Law use a stun gun to paralyze a “deadbeat” and then rip the client’s body open and reach in and pull out a heart, liver, kidney, or whatever. Perhaps you might prefer a Disney movie.

As with so many post-apocalyptic stories, there are abandoned, gritty sections of the city where the castoffs live. It seems most castoffs are hunted for their bodies filled with transplanted organs. For a similar situation see the film “Blade Runner”. Also note the theme of organ transplants in films such as “Dirty Pretty Things” and “Never Let Me Go”.

Before you click away from this description, I have to say that in a certain way this is a story of redemption. There is a point here. Whereas Liev Schreiber does a superb job as an amoral salesman for body parts, and whereas Forest Whitaker seems unconcerned about the ugliness of it all (after all, “a job is just a job”), Jude Law starts to regret and eventually realizes the horror of what he does for a living.

Because the ending confused me, I found it helpful to read the Wikipedia article. Perhaps reading the original book might help.

You have been warned!