It begins as a school trip to London. But with a sudden tidal surge and a dramatic thunderstorm that hurls rainwater down on the capital, it suddenly becomes something totally different: the site of a major disaster as the Thames Barrier is breached and London is flooded. With streets underwater, communications down, rats pouring up out of the sewers, and thousands of people in a state of panic, survival becomes a very key issue for Ben and his mates.

As world leaders gather and a student demo gathers pace, a small flame takes hold - and suddenly an unquenchable fire bursts into life and an inferno of flames up to l00 metres high tears through the streets, threatening homes and lives. And in the smoke and confusion, an important general is kidnapped!

Thirteen-year-old Ben Tracey is looking forward to spending the summer in the Democratic Republic of Congo, where his father has been hired to examine the valuable mineral Coltan that's being mined there. They soon realise that the people living in the village near the mine are frightened and it doesn't take long for Ben and his father to discover why: behind the door of every hut there is at least one person dying or seriously ill, and no one seems to be doing anything to help.

Having walked into the middle of the real reason the Hen Harriers are being shot down, Ben and Annie are captured as intruders and taken to a secure unit on a deserted area of the camp. These birds are just helpless victims in a much bigger operation - they attract too many visitors to the area and there's a top-secret piece of warfare technology being developed that needs to be kept quiet. If this weapon gets into the wrong hands it could have catastrophic worldwide effects.