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

"We shall explore the planet", captain Maguire . 


"As science officer, my concern about interference with a developing culture still stands", insisted captain Lucinda. 


"It is noted', acknowledged captain Maguire. "An important mandate of Space command is to explor new worlds. Who knows we may be able to find out some interesting facts about prehistoric Earth that were previously unknown. Think about it", captain Maguire urged as captain Lucinda looked him straight in the face, "any new discovery will go on your record". 


"Ok, what do you have in mind?", asked captain Lucinda. 


"Hmmm!", captain Lucinda loudly cleared her throat staring him in the face. 


"I mean, we shall lead a research team onto the planet's surface". 


Duality of reality