Torn apart by the loss of her mother, young Amanda spends time at a ranch owned by a business tycoon. When his spoiled daughter rejects their new horse, Amanda proves that Misty is a true champion and restores her own happiness in the process.

In Louisiana, the thirty-five year old single mother Lavina delivers a baby boy and a monster in the evil Whateley House. Ten years later, Dr. Henry Armitage and his assistant Professor Fay Morgan discover that the page 751 of every copy of the Necronomicon is missing and The Black Brotherhood has summoned the gate keeper Yog Sothoth to leave the portal opened to the demons and ancient gods. They invite the arrogant and skeptical Professor Walter Rice that can translate the Necronomicon to help them to seek the book. Meanwhile Lavina's son Wilbur Whateley ages very fast and seeks the missing page to open the portal.

A series of freak weather occurrences around Washington D.C. reunites two estranged brothers who are the sons of a once prestigious climate scientist. One of them suspects their father is behind it and upon further investigation, they discover that all of their father's enemies are dead - victims of freak weather accidents. Soon their suspicions are confirmed as their father hijacks radio and TV transmissions to relay the message that unless a certain Senator whom canceled his Defense Department contracts is handed over, the city of Washington D.C will suffer the consequences. As the brothers race to form a plan that can defeat their father, he lets loose a variety of diabolical weather weapons on the Smithsonian, Jefferson and Lincoln Memorials, and National Mall!