Chen Zhuo is the most senior patient at Qingshan Psychiatric Hospital, diagnosed with severe mental illness for ten years. Every day, he drapes a bedsheet over himself to play the alien agent "Hole-Hole Monster," uses slippers as a communicator, and firmly believes he is a hidden big shot sent to save Earth, greeting everyone with "Foolish humans." Nobody knows that a genuine immortal system is hidden inside him, taking the form of a dog-like spirit called Big Sucker. And this world really has been invaded by supernatural monsters. The Night Raid of the Drought Demon? Swatted away with a slipper! A thousand-year-old tiger spirit blocks his path? Beaten into submission with his "Kitty Fist" and ridden home as a mount! The Soul-Suppressing Bureau confiscated his bronze coffin?