2063 A.D., Human and Artificial Intelligence (AI) wage war against each other, completely destroyed earth ecology. Remaining human survivors are forced to live on a starship as interstellar immigrants, looking for new planet home. The goal of searching for enough energy to power starship for long journey fall under The Energy Platoon. The Energy Platoon discovered energy required to make interstellar travel is actually at the destroyed earth, inside that old bionic AI body.

Returning to earth looking for inter-planet power is dangerous mission, and due to gradually reduced military resource, young man and women are volunteering to become The 4th Force. This including new volunteer YuNeng. He and his teammate went through difficult Force training, hoping one day will join The Energy Platoon. But after a mysterious girl Z joined the training, they discovered a shocking conspiracy against Starship government.Because Z’s escape allow YuNeng’s team have chance to return to earth. They not only find out Z have to battle against AI, also against an unprecedented monster. And in the middle of life and death battle, they discovered the new unknown world behind the old world of AI.