A international science conference is held in Australia when Dr. Austin Shepard mysteriously disappears. Dr. Shepard's colleague, Christopher Richardson and other people are soon faced with the reality of an impending crisis and an attempt to keep the information from the public. While a full-blown supernova does not occur, explosions on the sun cause massive damage in Australia, and is shown often in Sydney and in various other cities and countries of the world.

Ben Archer, an ex-mob enforcer, seeks revenge against a ruthless Chinese kingpin responsible for his wife's brutal murder. When Archer joins forces with his old underworld friends, an all-out war is waged against the Chinese Triad.

Kevin McCallister's parents have split up. Now living with his mom, he decides to spend Christmas with his dad at the mansion of his father's rich girlfriend, Natalie. Meanwhile robber Marv Merchants, one of the villains from the first two movies, partners up with a new criminal named Vera to hit Natalie's mansion.