A comet is discovered to be on a collision course with Earth. As doomsday nears, the human race prepares for the worst.

Secret Service agent Mike Banning finds himself trapped inside the White House in the wake of a terrorist attack and works with national security to rescue the President from his kidnappers.

Based on the novel by Charles Templeton, a secret service chief leads a game of cat and mouse when a gang of third-world terrorists kidnap the President.