A massive rip in the fabric of space and time leaves Space command's deep space fleet stuck on the other side of the rift. Meanwhile alien ships from another dimension arrive on Earth en masse on the other side of the divide. Captain Maguire, a decorated graduate of the Space command academy, whose unorthodox approach to duty is also his strength in a desperate bid to defend commands his starship the Sandawana into the rift in a desperate bid to defend Earth. 
Arriving on Earth he initiates the counter attack to repel the alien ships from Earth.  Other starships of  Space command's deep space fleet arrive on Earth to support the Sandawana's fight against the alien ships. Under the vicious barrage of lasers and missiles from Space command's deep space fleet, the alien ships begin to withdraw to their own dimension. But as they retreat the aliens launch a ground operation and take a senior Space fleet officer captive. 
Captain Maguire is forced to pursue the aliens taking the fight to their home world.

Interdimensional, a starship trilogy

On an alien world in the Florian system, an uneasy silence fell upon the Tigalash division they advanced upon the narrow mountain pass. In the quiet of the moment as the warriors edged ever closer, to the pass between the range of mountains, the tension was growing, each warrior was only too aware of the potential danger that awaited them. The fact they had not encountered any opposition since they had left base camp that morning was not a good sign. 


They would have at least felt some semblance of reassurance if they could have been attacked, at least once and could have settled the matter in pitched battle. It was unrealistic to imagine that they had not been discovered. That the invaders were was so hard of hearing that they could have failed to detect such a powerful explosion as when the rock warriors emerged from their underground base below the volcano. 


Deadly encounter