Veg, Cal, and Aquilon--two men and one woman--roamed the alternate dimensions of space and time accompanied by the mantas, strange flying aliens, half animal, half fungus, with the keenest senses of any creature in the universe. But now, even the mantas were threatened in the hostile world dominated by savage robot machines. Trapped in an alternative dimension, the group's only hope of escape lay with the being they called OX--an amorphous, telepathic pattern of energy whose infinite power could destroy as easily as deliver...