Five hundred years ago, Grandmaster Tianxuan sealed the King of All Demons, in exchange for a prosperous and peaceful world. However, the good times were short-lived. Demons lurked in the peaceful town of Qui Yuan, and cholera resurfaced. In order to protect justice and peace, the young demon hunters are eager to try their luck. A young man named Qian Youdao, who dreams of becoming the best demon hunter in the world, stands out from the crowd. But as a strange case comes to an end, they discover a shocking secret....

When an alien prison ship crash lands and unleashes creature after creature in the California desert, they make quick work of the army that tries to stop them. Now, the only hope of stopping the aliens rests with a secret branch of the government specializing in alien weaponry. But with the team untested in actual combat, the battle for Earth will be brutal.