Zombies attack after some scientists smuggle a box containing an infected colleague onto a plane. Before long, the box is accidentally opened and passengers and crew start turning into undead killing machines.
Setting the movie mid-flight is an interesting idea. It provides a confined space, which adds to the claustrophobia and sense of danger, but also helps the budget - needing only a few sets and not many acting extras. The acting is not bad, and the characters are generally likeable. CGI is used, but not over-used, and is done well. The gore effects work because they don't try to be over elaborate or go outside of their budget. And the zombie make-up is kept simple (mostly blood and yellow contact lenses) and is actually very effective and creepy. This movie is fully aware of its limited budget, and knows how to get the best from it.
The film has its fair share of cliches (a claustrophobic crawl space sequence, a killer jumping through a bathroom mirror, a rapidly blossoming romance, a nun in an airplane) and there are several implausible incidents (opening the main door mid-flight, gunshots and explosions in a plane). But it's still hard to dislike this movie. It doesn't seem to take itself too seriously. It never gets boring. And it's pure daft entertainment. I laughed out loud several times, and really enjoyed it. It might not scare the pants off you, but it will certainly entertain you and put a smile on your face. 3.5/5