A pair of newlyweds must fight to survive when their wedding reception descends into chaos and carnage when their guests become infected by a virus that turns them into hungry zombies.
César, an unhappy concierge, maintains a peculiar relationship with the very diverse inhabitants of the upper-class apartment building where he works in Barcelona.
The action continues from [REC], with the medical officer and a SWAT team outfitted with video cameras are sent into the sealed off apartment to control the situation.