I'm looking forward to this one....I didn't know they were having any kind of problems...had not seen anything on this movie in a while so just thought everything was okay.

Yes, it's historical fiction. Basically it says that Lincoln's mom got killed by a vampire. Thus, he set out on a mission to kill all the vampires.

The "historical" part comes in in that it follows how he starts a war against slavery and all that real-life stuff. Except here it explains that his real motive was that slaves were feeding grounds for vampires, thus he wanted to abolish slavery so as to get rid of the vampires' food supply.