A group of five teenage castaways, exiled from Earth by the evil and oppressive Organisation that now rules, are drawn to the bleak, forbidding badlands of planet Klydor by a strange signal from an Earth ship. It can mean only one thing: the arrival of ColSec, Colonisation Section of the hated Organisation. Deep in the hideous labyrinths of Klydor's monster-infested caves, the kids find unexpected answers. Part 2/2, previous part Exiles of ColSec.