Oblivion, a powerful entity who commands a massive army, makes his way to Equestria. Of course, he destroys all life there. However, Princess Luna miraculously survives the slaughter and chases Oblivion to Earth, where she, with the help of four humans, creates new Elements of Harmony. Far stronger than before, representing not only the pony spirit, but the human spirit, as well. With these powers combined, four ordinary high school students become the Equestria Knights, final guardians of harmony and sworn defenders of all that Oblivion threatens.