This is a world full of too much love and peace, but too much love and contradictions only bring more cruel problems and tests. On this originally seemed prosperous and prosperous earth, in a certain year, a group of alien monsters appeared in an unknown way to conquer the world and possess everything. With a powerful military force that never appeared, sweeping the entire world. These conquerors have technological capabilities higher than humans, and can change into human appearance and shape, and even have different special abilities. This made the helpless earthlings not only suffer from the invasion of alien species, but also had many great powers at one time, and fell under the rule of a few alien species.