REC4 starts shortly after the final scene from the first movie, and we're back again into the apartment building where Ángela Vidal and her cameraman were faced with a viral outbreak that turned people into very aggressive and dangerous beings. We follow a special operations group, charged with clearing the building and retrieve any survivors to try and contain the situation. It appears that Ángela is the last survivor against all odds, and after extracting her from the building, the remaining members of the rescue team awake in a huge fishing vessel which has been turned into a quarantine facility. But it's not difficult to imagine that such an environment is the perfect place for another outbreak waiting to happen. And when suddenly all hell breaks lose, Ángela and the rest of the crew will have to fight for their lives once more.
As Balagueró stated, the success of the original film caught them by surprise. They started as some kind of experiment and they never expected to have to deal with sequels, so they didn't have the whole thing planned beforehand and were just improvising along the way. REC4 tries to address that, bringing together elements and plot lines from previous films and trying to tie all the loose parts. And for the most part, it succeeds in giving an overall coherence to the series' universe. Balagueró also chooses to ditch the use of handheld camerawork style, which was one of the trademarks of the series, and returns to a more classic approach to the genre. It's a wise decision, as he was clearly aware that it would be too difficult to justify the trick within this context. That being said, there are still elements that make the film recognisable as a REC movie, first and foremost the decision to enclose all the action into one single environment. The ship becomes a very important piece of the film, with all its narrow quarters and corridors turning into an oppressive maze, a rusty metal trap that conveys the appropriate sense of danger at every turn.
But sadly, most of what made the original film such an enjoyable rollercoaster is also gone. REC4 is an entertaining film, but comes across as just another modern zombie movie, with its array of familiar tricks and scares. The lead actress Manuela Velasco was very credible in REC as a young TV reporter dealing with the unexpected, but feels out of her depth here. Luckily the script acknowledges this and most of the dramatic weight lies on the shoulders of the rest of the cast.
There's still fun in here, and there's a generous amount of bloody zombie action that will surely please the fans. REC4 is an entertaining movie, and there's no doubt it works much better than the previous sequels, but it's also clear that it never reaches the same heights as the original. Balagueró has stated that the REC saga is over as far as he's concerned, and maybe that's for the best.