Bursting right through the four-dimensional travel zone of subspace, Tellurian psiontists make an amazing discovery on the other side.

Beyond the bounds of subspace, a parallel universe is cruelly ruled by a violent, murderous empire, the Justiciate, where psiontists are ruthlessly hunted down and fed to giant eagles.

And within the Justiciate are lodged spies and traitors, dedicated to its overthrow - evil agents of the proud Garshan 'master race'.

The arrival of the psiontists from Tellus triggers off a truly spectacular space adventure...