1985. Sur sa route, le brise-glace « Mikhaïl Gromov » doit affronter un énorme et puissant iceberg. Voulant éviter une collision fatale, le navire est pris dans les glaces et doit entamer une dérive forcée au large de l'Antarctique. L'équipage est à cran : un froid terrible règne tandis que le carburant touche à sa fin. Il leur est impossible de quitter le brise-glace sous peine de mourir de froid ou de se perdre. Le commandant du brise-glace n'a pas le droit à l'erreur. La moindre mauvaise décision peut les mener à la mort en se faisant écraser par les lourdes glaces.
Juillet 1977. June Leigh, était autrefois une figure célèbre de la contre-culture, mais c'était il y a une décennie. Cette ancienne romancière vit désormais seule dans son appartement au sud du Bronx, coupée du monde extérieur. Alors que le tueur en série surnommé sème la terreur dans tout le quartier, June n'a qu'à regarder par la fenêtre pour voir la violence s'intensifier sous l'effet de la canicule estivale. La ville est sur le fil du rasoir, un autocuiseur sur le point d'exploser dans les émeutes incendiaires de New York de 1977.
Set in the rural Pacific Northwest, a mysterious character named Silas Hendershot (Luke Perry) takes refuge from a severe thunderstorm in a farm owned by Tom (Steve Bacic) and Gillian Grady (Lauren Holly). He claims that he should stay and that they should watch after each other. Tom starts to dislike Silas and becomes suspicious of him and his past.
Protagonists, Sergei Krylov (A. Belyavskiy) and Oleg Tulin (V. Lanovoy), are promising young physicists in the field of thunderstorms. They dream of weather control. But later their ways in science parted - Oleg is ready to tradeoff his standpoints for personal success, but Sergei knows that the truth is more critical.
Andy Goodman (Brian Dennehy) is a week away from a forced retirement from his position as chief meteorologist at the National Weather Administration's Severe Weather Center. However, tornadoes level Las Vegas, an area normally not prone to the storms. Concerned and upset that the storm system formed unnoticed and that they were unable to warn the people, Goodman begins closely tracking the system. Goodman receives field reports from his friend "Tornado Tommy" (Randy Quaid) and assistance from new intern Sabrina Rogers (Alicia Johnston). As time passes, he realizes the system is heading towards Chicago, joined by an unusual warm storm coming from the south, which is already causing a record-breaking heat wave in the city, and an abnormally early cold front from the Arctic.
Following the events in Category 6: Day of Destruction, the superstorm that hit Chicago is continuing to grow in size and strength, with tornadoes hitting Paris and destroying the Eiffel Tower. Judith Carr (Gina Gershon), the new head of FEMA struggles to coordinate efforts to prepare for the aftermath of the storm and provide aid to ravaged areas. She calls in her former college lover, Dr. Ross Duffy (Cameron Daddo), and her father Senator Ryan Carr (Robert Wagner) to help her try to determine what is causing the storms and how to deal with the political issues. Tommy Tornado (Randy Quaid), who survived his seeming death in the previous film, returns to aid in tracking the storm in the United States, assisted by scientist Faith Clavell (Shannen Doherty). Similar storms are developing around the country and an interaction between urban heat islands and "falling chunks of mesosphere" fuels the storms making them more powerful. Hurricane Eduardo strikes toward Florida while the Category 6 storm hits Buffalo and heads towards New York City.
In the opening scene of Little Red Wagon, real news footage filmed in 2004 of Hurricane Charley and the storm's aftermath is shown. While Bonner and his family take shelter in Tampa from the storm, Bonner sees on television the widespread destruction caused by the hurricane. His volunteerism begins at that moment when he decides to canvass for food and other necessities for Hurricane Charley survivors.