In 2045, the contamination of the collapse fluid has spread to the entire earth. In order to compete for food and shelter, the two most primitive needs of human beings, the Third World War swept the world. After the war, the world was barren. While civilization was on the verge of destruction, the war and the labor shortage caused by the war prompted the advancement of mechanical technology, which led to the emergence of "humanoids" based on humans. Although they were created to provide various services to humans and their appearance is no different from that of human girls, they have abilities far beyond humans as mechanical life forms. This is the so-called "humanoid". As technology develops further, guns tailored for humanoids and the "tactical humanoids" who hold them have been equipped in all military organizations. At this time, the artificial intelligence of the arms company "Iron Blood Works" suddenly rebelled against humans. In order to investigate and stop its actions, the battle between the tactical humanoids of the private military contractor "Griffin" and the Iron Blood began. The "AR Squad" is composed of the most advanced tactical humanoids affiliated with "Griffin". While they work with human commanders to restore order in various places and protect human safety, they also gradually unravel the huge mystery hidden behind the war. When the heroic battle woven by the tactical humanoids comes to an end, what will they face... In 2045, the pollution of the collapse fluid has spread to the entire earth. In order to compete for food and shelter, the two most primitive needs of mankind, the Third World War swept the world. After the war, the world was barren. While civilization was on the verge of destruction, war and the labor shortage caused by war prompted the advancement of mechanical technology, resulting in the emergence of "humanoids" based on humans. Although their purpose of creation is to provide various services to humans, and their appearance is no different from that of human girls, they have abilities far beyond humans as mechanical life forms. This is the so-called "humanoid". With the further development of technology, guns tailored for humanoids and the "tactical humanoids" who hold them have been equipped in all military organizations. At this time, the artificial intelligence of the arms company "Iron Blood Works" suddenly rebelled against humans. In order to investigate and stop their actions, the battle between the tactical dolls of the private military contractor "Griffin" and the Iron Bloods begins. The "AR Squad" is composed of the most advanced tactical dolls affiliated with "Griffin". While they work with the human commander to restore order in various places and protect human safety, they also gradually unravel the huge mystery hidden behind the war. When this heroic battle woven by the tactical dolls comes to an end, what will they face...