"Celebration and Release of Satan's Spirit" is a supernatural short story that pits good against evil.
Worldly, lustful persons reserve a day to worship and praise the devil. Sinister spirits help to cause a possessed man to find and set free horrible demons from the bowels of earth. Much mayhem and death occur all over our world as a result, and it appears to all countries that it cannot be stopped.
A grandfather in Cuba waits for his family to arrive, only to find that they have all been slain on an airliner taking them to his country, to visit him. He is overcome with grief. Being very strong in his Christian faith he asks God to help him obtain vengeance for his loved one's deaths, and to use him in any way he chooses to undo this terrible set of events that has been unleashed on humanity.
God agrees to this, and accompanies Ray on his mission to rid the planet from the demonic monsters that have overcome it. Ray is successful, and the human race is never the same, now fully knowing that there is indeed a God and a devil.