The Earth's core has stopped spinning. Disasters are appearing all over the world: Birds acting crazy, powerful thunderstorms, 32 people die within seconds of each other when their pacemakers quit working. Dr. Josh Keyes and his crew of five (total members: 6) go down to the center of the Earth to set off a nuclear device to make the Earth's core start spinning again or Mankind will perish.

The fledgling romance between Nick, a playboy bachelor, and Suzanne, a divorced mother of two, is threatened by a particularly harrowing New Year's Eve. When Suzanne's work keeps her in Vancouver for the holiday, Nick offers to bring her kids to the city from Portland, Oregon. The kids, who have never liked any of the men their mom has dated, are determined to turn the trip into a nightmare for Nick.