A video blogger tries to stage fake cryptid sightings to increase his viewership, but faces consequences beyond his expectations when a genuine monster slaughters his crew. Meanwhile, students become prey to a sandworm-like creature, sparking a desperate fight for survival on their school grounds. As attacks by these mysterious creatures multiply, researcher Sousuke Banba takes it upon himself to investigate the mystery. Armed only with the keyword "Kagewani," he examines the sites of recent attacks, hoping to find clues that will allow him to eradicate the creatures permanently. However, Sousuke discovers that these threats to humanity are closer than he thought when the pharmaceutical company Sarugaku begins to interfere with his investigation.