My name is Rex. I Am the Good Dog.Rex is a dog, two meters tall, covered in light armor and equipped with large-caliber weapons, and his voice is tuned so that the resonance causes panic in the enemy. With Dragon, Molasses, and Swarm, he makes up the Multiform Assault Pack. They are used for military and police operations in Campeche, the southeastern state of Mexico - a kingdom of lawlessness and anarchy. Rex is a product of genetic engineering, Bioform, a deadly weapon in a dirty war. He has increased intelligence so that he can understand orders, and feedback implants have been installed that cause pleasure when they are carried out. All he wants is to be a Good Dog. This means following all the Master's orders, and the Master orders to kill enemies. But who are these enemies? What happens if the Master becomes a war criminal? What if the Geneva Convention bans such weapons? Will Rex and other Bioforms still have the right to exist? And what happens if Rex gets off the leash?..