Cirrus@Austlit

'To prevent the final explosion the Rangers must reach the computer buried deep inside the mountain, but getting there will prove to be one of the greatest challenges they've ever faced. Incredible changes lie ahead, and just as Boomer thinks he's begun to understand what's been happening, their world is once again turned upside down. Friendships are tested, enemies become allies, and the termites grow even more powerful. And while they struggle to cope, the countdown continues relentlessly.'

Source: Publisher's blurb.