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

"So let me get this straight", said captain Maguire sitting in one of the two visitors' chairs in admiral Gwangwa's office."You people created a smart probe of some kind. You went on to arm it with the most powerful weapon known to mankind. Then it's computer went haywire and it launched itself into outer space if I understand you correctly?" 


"Ah kind of ...", began captain Lucinda hesitatingly. 


"Yes captain, that's exactly what happened", said admiral Gwangwa cutting off captain Lucinda in mid statement, "and I am ordering you to go after the that probe and if possible bring it back in one piece". 


"The probe does not just carry a powerful weapon which Space command wants back, it also contains other sensitive items of technology. The onboard computer contains information relating to our entire defensive network. It is vital that the probe does not fall into alien hands". 


Call of duty