An alien entity has stolen a time weapon.
Rade and the Argonauts must retrieve the weapon and travel back 65 million years to ancient Earth to stop the entity from intervening in humankind's evolution. 
The stakes are high. If the team fails, they will return to find a galaxy populated not by humans but by the descendants of the dinosaurs.
The mission won't be easy. Ancient Earth is ruled by giant meat eaters who are just as happy to dine on the Argonauts as on the natives. The team does have one small advantage: their Hoplite battle suits, war machines packed with enough firepower to smash a small army. But how effective are the suits against building-size predators?
As the raging hordes of carnivores close in, the stage is set for the ultimate battle: mechs vs. dinosaurs.