In [REC]⁴ Apocalypse, a demonic outbreak caused by a virus threatens to wipe out humanity. The story takes place in a quarantined apartment building where surviving inhabitants must fight to stay alive.

When a couple's wedding is disrupted by a supernatural horror outbreak, they must fight for their lives and the survival of their guests.

A television reporter and cameraman follow emergency workers into a dark apartment building and are quickly locked inside with something terrifying. The residents of the building become infected with a virulent and contagious disease that turns them into bloodthirsty savages. As the reporter and cameraman fight for their lives, they discover the connection between the outbreak and demonic possession. In their quest to survive, they uncover the horrifying truth and are ultimately dragged into the darkness.

In this found footage horror film, a SWAT team enters an apartment building to rescue a man, only to discover that the building is infested with demonic possessions and flesh-eating zombies. As they try to escape, they face deception, supernatural powers, and the horrifying reality that there may be no survivors.