Timely yet terrifying, The Flood predicts the unthinkable. When a raging storm coincides with high seas it unleashes a colossal tidal surge, which travels mercilessly down England's East Coast and into the Thames Estuary. Overwhelming the Barrier, torrents of water pour into the city. The lives of millions of Londoners are at stake.

The leader of a South African Nation is imprisoned. His followers, led by Zabo, hijack a plane with the intent to use the passengers as hostages to trade for his release. They select a plane carrying a religious leader to use as their main hostage. They soon learn that they have an added bonus of the daughter and grandson of Colonel Shaw, a bigwig in the country. The grandson all the while has to cope with the dual problems of being hijacked and held hostage while needing a kidney transplant. The hijackers have everything in their favor, except that the colonel's daughter is the sweetheart of Major Sam Striker. Striker puts together a band of mercenaries and sets about freeing the hostages.

After surviving a helicopter crash in the uncharted South African wilderness, two young men, a girl and a renegade thief discover an ancient city unknown to civilisation.