Oh. My. God.
Honest to say, out of all the flashes you made so far, whether they be new or old, this is nothing like I have ever seen. The effects were realistic, the characters were well in character, and the plot was actually believable until the very end, when it was not as believable.
However, the reason why I gave you a 9/10 for this is when the fisherman opens his car door to let out "King", he appears to stutter a bit. Also, I find it very rare for thunderstorms to occur in the winter, since they usually occur in springtime.
But what I've seen towards the end brings up some very interesting questions: does the fisherman manage to fight off the furries and gets his life back? Or does he face an untimely death? If he really does survive, will he get back to his beloved Stacey? I must say, you're certainly one to bring up suspense, like the season one finale of "Wacky Game Jokes 4 Kidz!".
All in all, this was a truly epic flash. I hope you make more.