The Portal to the Other Side

Due to the influence of the dark side incident and the teleportation storm that lasted for two years, the earth was discovered by the high-tech imperial colonial forces. The empire invaded the earth through a huge portal and finally defeated the United Earth Government. All mankind was forced to succumb to the rule of the empire, leaving only a handful of resistance forces making useless resistance. However, due to a series of reasons, the empire's transmission was interfered with, and the troops were wiped out because they could not adapt to the earth's environment. The empire's control of the earth became weaker and weaker.