A horror/comedy in the vein of SHAUN OF THE DEAD and ZOMBIELAND, the film tells the story of a soldier (David Anders, from TV's 24 and Vampire Diaries) who is killed in Iraq and then finds himself resurrected as a "revenant," or one who has returned from the dead. He turns to his slacker best friend (Chris Wylde, of THE DESCENT and THE TEN) to help him manage his newfound thirst for blood, and the duo quickly realize that this zombiefied state is a perfect opportunity to become vigilante crime fighters. Their adventure quickly becomes more complicated and bloody than they expected as the movie escalates into a series of unexpected and horrifying twists.
It happens more often than you think, esp. now with the abundance of DVD/BluRay/video on demand. Remember "Margaret," the movie starring Anna Paquin, and Mark Ruffalo? That took around five years to be released, thanks to distributor and (I think) editing issues.