Meet Katsu Kaizou, a credulous 17-year-old high schooler deeply immersed in the realms of science fiction, aliens, ghosts, UFOs, and conspiracies. Firm in his belief that every occurrence is part of an extraterrestrial scheme to dominate the world, Kaizou's adventures are a series of peculiar, self-contained tales. Upon joining the school's science club, he forges new friendships and encounters a slew of bizarre phenomena, from log beings and lethal sushi to blade-wielding urine and eerie infections, not to mention robotic invasions, specters, sentient dolls, and a myriad of other inexplicable oddities!