Multiverse: Toilet Man and Surveillance Man

In the future world, toilet men from alien planets attack the earth, and humans are forced to move into bunkers, relying on the combat robot-monitor man developed by the artificial intelligence central system to fight against alien creatures on the ground. However, there are always some people who plan to escape from the oppressive bunker and seek the truth about the outside world. In the process of escaping, they encountered attacks from the alien creature Toilet Man and internal conflicts among the monitors. They gradually discovered that mankind's battle for survival is not only against alien creatures, but also against artificial intelligence that tries to control and exploit mankind...