Neighbors start to turn against each other because some have food and supplies and some don't. The situation is made even worse because they have no access to internet and their phones are not working. There is one visit by the Ministry of Health who has no idea how long it will last and says people are dropping like flies.
Pipi doesn't take any of this seriously and offers out their supplies to neighbors. Coco is much more intent on taking inventory and being careful about what they have and don't have. Lightbulbs burn out and they have no extras on hand. There are no razors to shave with. There is no interaction with the outside world except for television news reports of violence and crime. Speculation begins to happen as they start to become paranoid about whether or not someone in the apartment might be infected by this virus.
Coco and his neighbor Horacio band together to share supplies. Horacio shares a video that explains that Phase 7 is an attempt to control and reduce population in order to maintain the status quo. Neighbors band together to try to steal supplies and protect what's theirs and individual factions form inside the apartment building. Phase 7 is the story of what happens when chaos ensues inside the apartment building.
I think this is a fairly realistic representation about how things may happen in a real apocalypse. There are several references to Bush's speech about forging a new world order to give this an added feel of realism. The movie contains strong language and a fair amount of violence and blood. The movie is entirely in Spanish with English subtitles. Special features include deleted scenes and English dub option. If you like apocalyptic movies, I recommend you check this one out!