Based on the 2002 show, Firefly, Serenity is basically a thanks-for-waiting present for fanboys who never got to see a second season. The story is fairly similar to the show: the crew of the spaceship Serenity try to sneak past the evil Alliance and the canniballistic Reavers to help two stowaways reach safety. While the strange western-in-space theme may be too odd for some to handle, fanboys will absolutely love it. It's funny, smart, well-written, and delightfully creepy. All the actors turn in memorable performances. The special effects are stunning. I can safely say this is one of the best sci-fi movies I have ever seen (next to Star Wars and Avatar). Unfortunately, kids will not get to share the experience, since this movie contains some jarring scary moments. The Reavers will scare the pants off anyone under the age of ten. And for tweens, there are too many sexual references to ignore. This film is best left for teens and up only. A+.