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

Solid rock clashed fiercely with armour emitting sparks of electricity. Battle was joined and raged with fury. A division of the rock warriors emerging from volcano mountain had been ambushed by several units armadilla aromoured divisions invading from another dimension. 


The Tigalash division of rock warriors had been on their way to reinforce units of the sky nations entangled in fierce battle with beings invading their world Havala from an unknown dimension, when they fell into an ambush by the same beings as they entered a mountain pass which was along their route. Even as they had approached the narrow pass they had sensed danger. 


All of a sudden, weird looking six legged beings had descended on them from several different directions effectively encircling them. 


Clash of titans