In the third year of the apocalypse, zombies are rampant in the wasteland. In order to protect her younger brother {Lin Chen}, {Lin Wan} tried to survive by wearing a gentle mask, until her alien boyfriend {Karen} unexpectedly arrived. But after a strange energy storm, the two actually switched bodies - the violent soul under the gentle shell got into the alien body, and the cold and hard alien warrior was trapped in the delicate human body.
His younger brother died tragically due to the conspiracy of the selfish local magistrate {Zhao Kun}. {Lin Wan} completely tore off the disguise and used {Karen}'s body to kill the zombies with alien powers; {Karen} borrowed {Lin Wan}'s body and used alien technology to crack the system bugs hidden behind the apocalypse and uncover the blackened system host {Chen Feng}.
From hating each other to fighting side by side, they hoarded supplies to build a safe house while tracing the truth behind the sacrifices of their loved ones. They crushed selfish officials and villains with bugs in the system one by one, and carved a path of survival in the wasteland for the aliens and their irritable girlfriends!
