There seems to be a genre of action films in which the main character used to be some tough badass, and right as they're turning a new leaf to become a kinder, gentler them, someone they love disappears, and they have to return to their former badassery.
In the Blood is no exception. In a flashback to start the movie, young Ava is taught how to be tough by her dad. She's also taught to be an emotionless stiff with a mind for killing. Really, it's what any dad would do. Look for my daughter the robot in a few years. Anyway, we come to present day, when Ava is about to walk down the aisle and marry Derek, the son of a wealthy douchebag (Treat Williams) who assumes that Ava is nothing but a gold digger. This might have to do with the fact that the happy couple met in drug rehab.
The couple weds and heads off to an exotic Caribbean vacation to a house owned by Derek's family. At a local restaurant, they're befriended by a young guy named Manny, who promises to take the couple ziplining. I'm going to let you guess what happens next. Got it yet? Come on, it's not that hard. There you go. Something goes wrong on the zipline. Derek's hook snaps, and though Manny tries to save him, he crashes through the trees, breaking his leg. For some reason, the ambulance drivers won't let Ava ride along, and she loses them on the way to the hospital. This is when, as the kids say, shit gets real.
