More than a hundred years ago, the human world was destroyed by time string forces from the universe. Mutation, slaughter, and war followed one after another. In order to avoid the pursuit of monsters, humans gathered in the final Pure Land of Ximai City, living like trapped beastsLive. On a rainy night, the commander-in-chief of the expeditionary force, Kobei Island, suddenly defected from the city of Seymour, and that night, the expeditionary force was killed on a large scale. Ye Yuze, who comes from an expedition team and is currently the captain of the garrison, remembers Ke BeiBefore the island left, it seemed that there was some conspiracy hidden in the city of Ximai. At the same time as the investigation was conducted in the rainy night, the senior management held a meeting with the intention of dividing up the remaining troops of the expeditionary force. President Du Lixun ordered the cooperation with Ke BeiAll people related to the island will be killed. The larger scale crackdown on Ximai City began. The Night Rain Ze broke through the layers of obstacles of the soldiers, rescued the daughter of Kobei Island, Twilight, and fled from the city of Seymour. However, during the conversation, the night rainZe, however, increasingly felt that things were far from being as simple as he thought, and that a larger conspiracy had slowly begun to attack the entire human world