Cyborg 009 is a story about nine experimental cyborgs (eight male and one female), which have been collected by the evil terrorist group, Black Ghost. Those nine cyborgs with the aid of a scientist turn against Black Ghost's control. Black Ghost in turn starts sending more cyborgs to destroy their first nine experimental cyborgs and causing destruction all around the world. 
(Source: AnimeNfo)
 
Episodes 1-48 aired on TV. Episodes 49-51 consist of the "GOD'S WAR" OVA. An additional recap episode aired between episodes 47 and 49.
 
The "GOD'S WAR: Prologue" bonus arc is not intended to be in continuity with the other episodes, as it was instead produced as a teaser at adapting the unwritten final chapter of the Cyborg 009 manga. TV Tokyo could not air more than 51 episodes and the first two OVA episodes were cut and merged together into one episode, leaving the final one unaired.
 
(Source: Cyborg009 Wiki)

After an explosion at an archaeological excavation research facility in the Middle East, the world is changed in unthinkable ways. The sky is suddenly a mirror, electronic devices mysteriously no longer work properly, and children who are born after this point seem to have strange, metaphysical powers. Society is but a shell of its former self, and in the midst of the clandestine forces that brought about this eerie apocalypse is an elite group of young, powerful mutants who are working to restore the world under the direction of a woman known only as The Countess. 
The story centers on a brother and sister, Tatsuya and Kiyoko, the children of a scientist at the Twin X facility. 
(Sources: Blockbuster &amp; ANN)

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